*Note 1- Headstamps often contain multiple pieces of information. The maker is almost always identified. Military ammunition usually includes date information, and civilian ammunition often has caliber information. Sometimes dates are fairly obvious (44 = 1944; 72 = 1972; 6 12 = June 1912, etc.). Sometimes the caliber information is either spelled out or abbreviated (30-06; 38 SPL, etc.) and other times, such as on German made DWM ammunition, a catalog number code is used for the caliber. Sometimes information on the headstamp indicates the type of load (VII Z on .303 British indicates Mark VII ball ammunition loaded with nitrocellulose powder.) Sometimes markings are deliberately deceiving, as with some .30 carbine ammunition ammunition marked LC 52, made by the Chinese, or .30-06 marked B N 4 40 made in the U.S., both probably intended to arm allies while hiding their source of supplies. Sometimes the headstamp only indicates the maker of the cartridge case, or distributor of the loaded cartridge, or the using activity, not the actual "manufacturer" of a loaded cartridge.
Code | Manufacturer
(or in some cases the maker of the cartridge case, or distributor of the loaded ammunition, or a using activity, or other meaning. See Note 1 above *) | Ref |
- 0 - |
| 0 | Unknown Factory, Czechoslovakia | 14 |
| 05 (5) | Spreewerke, Lübben, East Germany | 7 |
| 07 (070) | Ammunitionsfabriken Karlsborg, (Nammo/Vanäsverken), Sweden (also FFV Vanasverken, Karlsborg) | 7 |
- 1 - |
| 1 | Rheinisch- Westfälische Sprengstoff A.-G. (Part of the Dynamit Nobel group), Nürnburg, Germany. Found on 7.62 x 39mm. | 7 |
| 1 | Unknown Factory, Peoples Republic of China | 13 |
| 10 | Arsenal, Kazanlak (previously named Durjava Voenna Fabrika), Bulgaria (When found on ammunition made after 1946). | 7 |
| 10 | Russian State Arsenal, location unknown. Listed here to avoid confusion with Bulgarian factory using the same code. Found on ammunition made 1946 and earlier. Factory Ceased operations in 1946 | 7 |
| 101 | Unknown Factory, Peoples Republic of China | 13 |
| 11 | Chinese State Factory at Mudanjang and part of NORINCO group. Normally found as part of a two-entry headstamp with date being the only other entry | 7 |
| 11 | Not a manfuacturer's code, but rather a load identification code used by Pretoria Metal Pressing Ltd Pretoria, RSA on brass cases | 14 |
| 11 | Prvi Partizan, Miloša Obrenovica 2, 31000 Uzice, Yugoslavia (Serbia) | 1 |
| 11 | Unknown Factory, One of the countries that use to be part of Yugoslavia (only on brass cases) | 13, 14 |
| 111 | Unknown Factory, Peoples Republic of China | 13 |
| 12 | Not a manfuacturer's code, but rather a load identification code used by Pretoria Metal Pressing Ltd Pretoria, RSA on brass cases | 14 |
| 12 | O.J.F. (Osterreichische Jegdpatronenfabrik) Kremsach | 14 |
| 121 | Heilongjiang North Tool Factory in Mundanjiang, Peoples Republic of China | 9 |
| 13 | Not a manfuacturer's code, but rather a load identification code used by Pretoria Metal Pressing Ltd Pretoria, RSA on brass cases | 13 |
| 13 | Unknown Factory, Cuba | 13 |
| 131 | Unknown Factory, Peoples Republic of China | 13 |
| 141 | Unknown Factory, Peoples Republic of China | 13 |
| 17 | Barnaul Machine Tool Plant JSC, 28 Polevaya St., Barnaul 656002, Altai Territory, Russia | 7 |
| 171 | Unknown Factory, Peoples Republic of China | 13 |
| 184 | Russian State Factory, Kazan Region, Russia. | 7 |
| 187 | Tula Cartridge Plant JSC, 139 Marat St., Tula 300035, Russia | 7 |
| 188 | Novosibirsk Low Voltage Equipment Plant JSC, 30A Stantsionnaya St., Novosibirsk 630031, Russia | 7 |
- 2 - (Video) Ammunition Evaluation: Ethiopian .30-06 |
| 2 | Royal Ordnance Factory Woolwich, England. Found on .303 Mark II, c. 1880s | 7 |
| 201 | Unknown Factory, Peoples Republic of China | 13 |
| 21 | Mátravidéki Fémmüvek Sirok, Hungary. Normally found on cartridge headstamps with a date stamped right-side up in relation to the factory code | 7 |
| 21 | Plant 21, Uzinale Metalugica Di Copsa Mica Si Cugir, Romania. Normally found on cartridge headstamps followed by the letters RPR which stand for Republica Popolara Romana (People's Republic of Romania) | 7 |
| 21 | Zaklady Metalowe MESKO, Skarzysko-Kamienna, Poland. Normally found on cartridge headstamps with a date stamped upside down in relation to the factory code | 7 |
| 211 | Unknown Factory, Peoples Republic of China | 13 |
| 21215 | Unknown Factory, Peoples Republic of China | 9 |
| 22 | Plant 22, Romania (address and actual name unknown) | 7 |
| 221 | Unknown Factory, Peoples Republic of China | 13 |
| 23 | Unknown Factory, Hungary, Probably now associated with Magyar Löszergyártó Kft., Mátravidéki Fémmüvek, H-332 Sirok, Hungary | 13 |
| 234 | Unknown Factory, Poland | 9 |
| 24 | Norrhammars Bruk (Only manufactured the cases), Sweden | 4 |
| 25 | Vulcans Tändsticksfabrik, Tidaholm, Sweden | 4 |
| 26 (026) | A.B. Svenska Metallverken. Västerås, Sweden | 4 |
| 27 (027) | Norma Projektilfabrik, Åmotfors, Sweden | 4 |
| 270 | Soviet State Factory at Lugansk, Ukraine | 7 |
| 28 | Jönköpings Västra tändsticksfabrik, Jönköping, Sweden | 4 |
| 29 | Valtion Patruunatehdas (VPT), Finland. | 4 |
- 3 - |
| 3-D | 3-D Company Inc., (later 3-D Investments Inc and 3-D Ammunition and Bullets), Box J Mainstreet, Doniphan, NE 68332 | 1 |
| 3-D | 3-D Investment Co. Inc, Doniphan, Neb., USA (at least some cases were made by Starline Inc., Covina, CA) | 14 |
| 3 IMPACT D | 3-D Investment Co. Inc, Doniphan, Neb., USA | 14 |
| 3 | Ulyanovsk Machinery Plant State Production Association, 2 Metallistov St. Ulyanovosk 432031, Russia | 7 |
| 30 | Deutsche Waffen-u. Munitionsfabriken A.-G., Facility in Herstal Belgium under German occupation (ex-FN) | 4 |
| 301 | Unknown Factory, Peoples Republic of China | 13 |
| 304 | Probably Kouskovo / Lugansk, Moscow, USSR | 9 |
| 31 (031) | Unknown Factory, Peoples Republic of China | 13 |
| 31 | Svenska Tändsticks AB Jönköping, Sweden | 4 |
| 311 | Unknown Factory, Peoples Republic of China | 13 |
| 312 | Unknown Factory, Peoples Republic of China | 13 |
| 32 | Linköpings Tändsticksfabrik, Lidköping, Sweden. | 4 |
| 321 | Unknown Factory, Romania | 13 |
| 322 | Unknown Factory, Romania | 13 |
| 323 | Unknown Factory, Romania | 13 |
| 324 | Unknown Factory, Romania | 13 |
| 325 | Unknown Factory, Romania | 13 |
| 33 | WaffenwerkBrünn, Czechoslovakia. | 4 |
| 331 | Unknown Factory, Peoples Republic of China | 13 |
| 34 | JönköpingsTändsticksfabrik, Sweden | 4 |
| 341 | Unknown Factory, Peoples Republic of China | 13 |
| 343 | State Munitions Factory at Krupski Mlyn (Silesia), Poland, as found on 7.62 x 25mm ammunition. Found also with a circle around the numbers | 7 |
| 35 (035) | Svenska Metallverken, Blikstorp, Sweden (1954 to 1965) | 7 |
| 351 | Unknown Factory, Peoples Republic of China | 13 |
| 352 | Unknown Factory, Peoples Republic of China | 13 |
| 38 | Russian State Factory at Yuryusan (Tscheljabinks Region), Russia | 7 |
| 391 | Unknown Factory, Peoples Republic of China | 13 |
- 4 - |
| 4 | Remington Arms Company, Inc., Bridgeport CT , and later: Lonoke, AR (only encountered on 12.7x99mm aluminum cases) | 14 |
| 4 | Volkseigene Betrieb (VEB) Mechanische Werkstätten Königswartha, East Germany | 6 |
| 434 | Imported to Sweden from Norway and made by Bakelittfabrikken, Norway | 4 |
-5 - |
| 5 | Remington Arms Company, Inc., Bridgeport CT , and later: Lonoke, AR (only encountered on 12.7x99mm aluminum cases) | 14 |
| 501 (0501) | Unknown Factory, Peoples Republic of China | 13 |
| 51 | Unknown Factory, Peoples Republic of China | 13 |
| 539 | Tula Cartridge Works (Tulski Patronny Zavod), 139 Marata St., 300004, Tula, Russia | 7 |
| 54 | Panstwowe Fabryka Am., Skarzysko-Kam., Poland | 9 |
| 541 | Possibly Tula Cartridge Works, Tula, USSR | 9 |
| 583 | Imported to Sweden from Raufoss, Norway. | 4 |
| 586 | Imported to Sweden from Hirtenberger, Austria. | 4 |
| 599 | Imported to Sweden from Diehl Wehrtechnik, Germany | 10 |
-6- |
| 60 | Russian State Factory at Frunze, Kirgisia, Russia | 7 |
| 601 | Sellier & Bellot, Prague, Czech Republic, Factory in Vlasim reportedly made for Kazakhstan | 8, 13 |
| 601 | Unknown Factory, Peoples Republic of China | 13 |
| 602 | Imported to Sweden from Canada and made by SNC. | 4 |
| 604 | Argus, Austria | 10 |
| 60A | 60th Arsenal, Kao Hsiung, Taiwan, Nationalist China | 2 |
| 61 | Unknown Factory, Peoples Republic of China | 13 |
| 613 | Imported to Sweden from Brazil and made by CBC. | 4 |
| 616 | Imported to Sweden from USA and made by Winchester/Olin | 4 |
| 6201 | Unknown Factory, Peoples Republic of China | 13 |
| 6202 | Unknown Factory, Peoples Republic of China | 13 |
| 6203 | Unknown Factory, Peoples Republic of China | 13 |
| 641 | Unknown Factory, Peoples Republic of China | 13 |
| 651 | Unknown Factory, Peoples Republic of China | 13 |
| 661 | Unknown Factory, Peoples Republic of China | 13 |
| 671 | Unknown Factory, Peoples Republic of China | 13 |
- 7 - |
| 7 | Vympel State Production Association, Khabarovsk Territory, Russia | 13 |
| 71 | FFV Zakrisdalsverken, Karlstad, Sweden | 4 |
| 71 | Unknown Factory, Peoples Republic of China | 13 |
| 710 | Russian State Ammunition Factory at Podolsk, Russia | 7 |
| 711 | Russian State Ammunition Factory at Podolsk, Russia | 7 |
- 8 - |
| 81 | Unknown Factory, Peoples Republic of China | 13 |
| 88 | Western Cartridge Company (Olin), East Alton, IL | 8 |
- 9 - |
| 911 | Unknown Factory, Peoples Republic of China | 9 |
| 9121 | Unknown Factory, Peoples Republic of China | 13 |
| 9141 | Unknown Factory, Peoples Republic of China | 13 |
| 93 | Unknown Factory, North Korea | 13 |
| 944 | Unknown Factory, Peoples Republic of China | 13 |
| 946 | Unknown Factory, Peoples Republic of China | 13 |
| 947 | Unknown Factory, Peoples Republic of China | 9 |
| 948 | Unknown Factory, Peoples Republic of China | 13 |
| 95 | Unknown Factory, North Korea | 13 |
| 964 | Unknown Factory, Peoples Republic of China | 13 |
| 9661 | Unknown Factory, Peoples Republic of China | 13 |
| 9671 | Unknown Factory, Peoples Republic of China | 13 |
-A - (Video) Quick Tip: The Do's & Don'ts of Ammo Storage |
| A-MERC | American Ammunition Co., 3545 NW 71st St, Miami, FL 33147 USA | 17 |
| A-ZOOM | Originally A-ZOOM Ammo, A division of Ready Products Corp., 4 Chrysler, Irvine CA 92618 (800-61READY). Currently owned and operated by Pachmayr, a division of Lyman Products, 475 Smith Street, Middletown, CT 06457 | 1 |
| A N | Lake City Ammunition Plant, Lake City, MO | 15 |
| A T 3 | Unknown Factory, Yugoslavia (actually is ATZ in Cyrillic letters) | 15 |
| A&W | Allen & Wheelock, Worchester, MA | 3 |
| A | American Cartridge Company, Kansas City, MO | 3 |
| A | American Metallic Cartridge Co., South Coventry, CT | 3 |
| A | Pretoria Metal Pressing Ltd, Pretoria, RSA | 1 |
| AA | Danish Government Arsenal (Ammunitionsarsenalet) Copenhagen, Denmark | 1 |
| ABT | American Ballistics Co., Inc. 1851 Canbdy Lane SW, Marietta, Georgia 30060 | 1 |
| AC | Armeria F.A. San Cristobal, San Cristobal, Dominican Republic | 3 |
| ACE | Unknown-Perhaps CBC of Brazil | 18 |
| ACP | Arms Corporation of the Philippines, Parang, Marikina City, Metro Manila, 1800 Republic of the Philippines (formally Squires Bingham Co.-see SB) | 17 |
| AD | Komando Perindustrian TNI, Angkatan Darat, also known as Pabrik Senjata Mesiu, with ammunition factory at Turen, Maland, East Java (the Bandung facility is a small-arms factory) | 1, 7 |
| AD | MAST Technologies, originally at Las Vegas, but now located at 14555 US Hwy 95 South, Boulder City, Nevada 89005, USA, on ammunition made for Abu Dhabi | 1, 7 |
| ad | Patronen-Zündhütchen-u. Metallwarenfabrik, Aktiengesellschaft (formally Sellier & Bellot) ,Schönebeck/Elbe, Germany-WWII era | 1 |
| AE | in Israel, for "Eretz Ayalon (Homeland production at Ayalon Factory), a pre-independence Underground factory in the basement of a laundry at Kibbutzim Hill, Rehovot, Israel | 1, 7 |
| AEP | Anciens Établissements Pieper, Herstal, Belgium | 1 |
| AF | Small Arms Ammunition Factory No. 1 Footscray, Australia | 3 |
| AFF | Small Arms Ammunition Factory No. 1 Footscray, Australia | 1 |
| AGUILA | Industrias Tecnos S.A. de C.V., Kilometro 6 Carretera Cuernavaca-Tepoztlan, Cuernavaca, Morelos, México C.P. 62000 (formally Cartuchos Deportivos de México S.A.-see CDM) | 17 |
| AH (overlaid) | Csepel Arsenal near Budspest, Hungary | 15 |
| AI | Artillerie - Inrichtingen NV, (Now Eurometaal NV) P. O. Box 419, 1500 EH Zaandam, The Netherlands | 1 |
| ak | Munitionsfabriken (formally Sellier & Bellot), Prague with factory in Vlasim, Czechoslovakia, (Manufactured under German occupation) | 1 |
| All German P??? codes | See http://users.swing.be/sw017995/german-codes.htm | |
| am | Gustloff-Werke, Otto Eberhardt-Patronenfabrik (formally Hirtenberger Patronen Züundhütchen & Metallwarenfabrik A.-G.), Hirtenberg, Niederdonau, Austria (Manufactured under German occupation) | 1 |
| AMA | Danish Government Arsenal (Ammunitionsarsenalet) Copenhagen, Denmark | 1 |
| AMI | Anderson Munitions Inc., P.O. Box 2050, Cardova, TN 38088-2050 ( ca' 1996-1998 P.O. Box 17383, Memphis, TN) | 17 |
| AMRON | AMRON, Guld + Western Systems, Waukesha, WI 53186 USA | 18 |
| AMT | AmmoTech (Ammutechse), Wierda Park, Centurion, Republic of South Africa | 18 |
| AMTECH | Amtech International Inc., 4142 Industrial Ave E., Cour d'Alene, ID 83814-2199 | 17 |
| AO | Allegany Ordnance Plant, US | 15 |
| AOA | Asahi-Okuma Arms Co. Ltd., 5050 Asanimae-Cho, Owari-Asahi, Aichi, Japan 488 (after May 1961-Asahi-Seiki Manfacturing Co. Ltd,) | 17 |
| AOC | Bombrini Parodi Delfino, Rome, Italy on contract cartridges for Egypt | 15 |
| AP | Arms Corporation of the Philippines, Parang, Marikina City, Metro Manila, 1800 Republic of the Philippines (formally Squires Bingham Co.-see SB) | 1 |
| AP | Unknown Factory, France | 15 |
| AREX | AREX, Proizvodnja orodij, naprav in storitve d.o.o., Trubarjeva 7, 8310 Sentjenej, Slovenia | 13 |
| ARS | Atelier de Constuction de Rennes, Rennes, France | 1 |
| ARS | Unknown, possibly A. R. Sampson, Sampson Machine Wroks, Costa Mesa, CA | 18 |
| asb | Deutsche Waffen-u. Munitionsfabriken A.-G. Eichborndamm 107-127, Berlin - Borsigwalde, Germany - WWII | 1 |
| ASC | Probably Fábrica Nacional de Munições de Armas Ligeiras, Chelas, Portugal | 1 |
| ATS | Atelier de Construction de Tarbes, Tarbes, France | 1 |
| aux | Polte, Werk Magdeburg, Poltestr. u. Fichtestr.,Magdeburg, Germany | 1 |
| auy | Polte, Werk Grüneberg (Nordbahn), Germany | 19 |
| AV FS | Probably Hirtenberger Patronen-, Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Niederdonau, Austria | 18 |
| avu | Silva Metallwerke G.m.b.H., Genthin, Germany | 19 |
| AWA | A & W Allendorff, Sprengstoff-und Patronenfabrik, Schönebeck a. Elbe, Germany (After Aug 1, 1913: Öberschlesische Aktiengesellschaft für Armee und Marine, Abteilung, Schönebeck a. Elbe 10, Germany---from box label Öberschlesische Werke A.-G.) | 18 |
| ay | Pirkl, Alois, Elektrotechnische-Fabrik, Ruppersdorfstr, 30, Reichenberg/Sud., Germany | 1 |
| aym | Povázské Strojárne Národný Podnik, Povázská Bystrica, Czechoslovakia | 1 |
| AYR | A/S Raufoss Ammunisjonsfabrikker, Raufoss, Norway | 2 |
-B - |
| B-WEST | B-West Inc., Tucson, Arizona (produced in Russia by Tula) | 1 |
| B N | Lake City Ammunition Plant, Lake City, MO | 15 |
| B T 3 | Unknown Factory, Yugoslavia (actually Cyrillic letters VTZ | 15 |
| B | Berndorfer Metallwarenfabrik Arthur Krupp A.G., Berndorf, Niederdonau | 3 |
| B | Birmingham Metal and Munitions Co. Ltd., Birmingham, UK | 3 |
| B | Braun & Bloem, Dusseldorf, Germany | 3 |
| B | Durjava Voenna Fabrika (D. V. F.), Kazanlak, Bulgaria. | 1 |
| B | Leon Beaux & Co., Milan, Italy | 3 |
| B | Pirotecnico di Bologna, Bologna, Italy | 1 |
| BAO | Durjava Voenna Fabrika (D. V. F.), Kazanlak, Bulgaria | 1 |
| BB | Bertram Bullet Co. Pty. Ltd., 200 Goulburn Valley Highway, Seymour, Victoria, 3660, Australia | 17 |
| BB | Braun & Bloem, Dusseldorf, Germany | 3 |
| BBM | BBM Corporation, 221 Interstate Drive, West Springfield, MA 01089 | 1 |
| BD | Hall's Telegraph Co., Burghfield, UK | 15 |
| BE | Royal Ordnance Factory, Blackpole, UK | 1 |
| BEAUX | Leon Beaux & Co. S.p.A., Via Dante, 14, Milano, Italy (address ca' 1956---1929 address: Via Paleocapa 4, Milano) | 17 |
| BEST SHOT | Target Products Inc., Grand Rapids, MI, USA | 18 |
| BF | Bakelittfabrikken A/G, Aurskog, Norway | 1 |
| BF | Fábrica Nacional de Munições de Armas Legeiras, Chelas, Portugal | 1, 7 |
| BHA | Black Hills Ammunition, 3050 Eglin St, Rapid City, SD 57703-9574, USA | 17 |
| BM | British Munitions, UK | 11 |
| BM | Bullet Master, 1515 Moo 4 Soi Kwang Rung Kwang Lot, Theparak Road, Samrong Nua, Samutprakarn 10270, Thailand | 17 |
| bne | Metallwerk Odertal G.m.b.H., Odertal (Post Lautaberg/Harz, Germany | 3, 7 |
| bnf | Metallwerk Wolfenbüttel G.m.b.H., Halchterstr. 2l, Germany | 19 |
| BO WAY | BOWAY Gun Company, 41 Broadway, Glenelg, South Australia, Australia | 18 |
| BOF | Bangladesh Ordnance Factory, Bangladesh | 13 |
| BPD | Bombrini Parodi Delfino, Rome, Italy | 1 |
| BPE | Unknown | 18 |
| BPS | Boland Production Supply, Winter Haven, FL, USA | 18 |
| BROWNING | Browning Arms Company, Route #1, Morgan, Utah 84050 | 1 |
| Buffalo Rock | Buffalo Rock Shooters Supply, Route 1, Ottawa, WI 61350 (on cases made by Starline) | 17 |
| BULLSEYE | Unknown-found on 38 Special in Hong Kong China | 18 |
| bxn | Sellier & Bellot, Prague, Czechoslovakia, Factory in Zbrojovka Vlàsim, | 1 |
| byw | Johannes Schaefer, Stettiner Schrauben-werk, Stettin, Germany | 19 |
- C - |
| C-B | COR-BON, 1311 Industrial Rd, Sturgis, SD 57785 | 1 |
| C-P | Crompton Parkinson Co. Ltd, Doncaster, Yorkshire, U.K. | 8 |
| C N | Lake City Ammunition Plant, Lake City, MO | 15 |
| C | Creedmore Cartridge Co., Barberton OH | 3 |
| C | Munitionsfabrik Cassel, Cassel, Germany | 1 |
| C | Pirotecnico Dell'Esercito Capua, Capua, Italy | 1 |
| CAC | Colonial Ammunition Co., Footscray, Australia | 11 |
| CAC | Colonial Ammunition Company, Auckland, New Zealand | 2 |
| CALGARY P.S. | Olin Corp., East Alton, IL 62024, USA (for the Calgary Police Services in Canada) | 18 |
| CAVIM | Compañía Anonima Venezolana de Industrias Militares, Apartado Postal: 66.459-1061 - Urb. Las Mercedes, Calle Jalisco, Edificio CAVIM, Caracas 1060, Venezuela | 7 |
| CB | Cartoucherie Belge, Liege, Belgium | 1 |
| CBC | Companhia Brasileira de Cartuchos, Avenida Industrial No 3330, Santo Andre, Estado de Sâo Paulo, Brazil (ca'1997: Av Humberto de Compos 3220, 09400 000 Ribeirao Pires SP, Brazil) | 1 |
| CCC | Canyon Cartridge Company, 141 Albertson Ave, Albertson, NY | 1 |
| CCC | Creedmoor Cartridge Co., Barberton, OH | 3 |
| CCI | Cascade Cartridge Internacional S.A. de C.V., KM. 419.45 Carretera Central, San Luis Potosi, Mexico (Partially owned by CCI of the USA from mid 1960s to early 1990s) | 18 |
| CCI | Omark Industries, CCI-Speer / Sporting Equipment Division, Lewiston ID 83501 USA | 1 |
| CDL | C D Leet, Springfield, MA | 3 |
| CDM | Cartuchos Deportivos de México, S.A., Kilometro 6 Carretera Cuernavaca -Tepoztlan, Cuernavaca, Morelos, México, C.P. 62000 (now Industrias Tecnos-see AGUILA) | 1, 7 |
| cdp | Theodor Bergmann & Co., K.-G., Waffen- und Munitionsfabrik, Werk Bernau, Kleistrasse 21, Berlin W 62, Germany | 7 |
| CF | Cartoucherie Française, Paris, France | 3 |
| CG | ofors Carl Gustaf AB, (Formerly FFV Förenede Fabriksverken), Vanäsverken, Karlsborg, Sweden (and since 1998, NAMMO Vanäsverken. Carl Gustaf name is no longer used, but "CG will continue to be used as a headstamp) | 7 |
| cg | Finower Industrie G.m.b.H., Finow/Mark, Germany | 19 |
| ch | Fabrique Nationale D'Armes de Guerre (FN), Herstal, Belgium, Under German occupation and management by Deutsche Waffen-u. Munitionsfabriken A.-G. | 1 |
| CHAMPION | Unknown (cases made by Starline) | 18 |
| CI | Cascade Cartridge Internacional S.A. de C.V., KM. 419.45 Carretera Central, San Luis Potosi, Mexico (Partially owned by CCI of the USA from mid 1960s to early 1990s) | 17 |
| CIS | Unknown Factory, Singapore | 15 |
| CJ | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 1 |
| CMB | Manurhin, France for Brazil | 15 |
| CMC | Uzinale Metalwrgica di Corsa Mica SI, Cugir, Romania | 1 |
| CN | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 1 |
| CN | Unknown Factory, France | 15 |
| CNIC | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 13 |
| COLT | Colt Inc, Military Arms Division, 150 Huyshope Ave., Hartford, CT 06102 and also Colt's Patent Firearms Manufacturing Co., Inc., P.O. Box 1868, Hartford, CT 06144 | 1 |
| COR-BON | COR-BON, 1311 Industrial Rd, Sturgis, SD 57785 | 7 |
| CP | Crompton Parkinson Co. Ltd, Guiseley, Yorkshire, U.K. (1939-1945) | 8 |
| CPM | Canadian Professional Munitions Ltd., 300 Railway St., Raymond, Alberta T0K 2S0, Canada | 18 |
| CRB | Cartoucherie Russo-Belge, Liege, Belgium | 3 |
| CROWN | Crown Aircartridges Ltd., P.O. Box 25, Bexhill upon Sea, East Sussex, TN39 4QB, England, UK | 1,18 |
| CT | Società Metallurgica Italiana, Campo Tizzoro, Italy (CT = Campo Tizzoro) | 15 |
| CTMCo | Crittenden-Tibbals Manufacturing Co., South Coventry, CT | 3 |
| CV | Cartoucherie Voltaïque (CARVOLT), Ouagadoudou, Rèpublique Voltaïque (formally Upper Volta) | 1 |
- D - |
| D&C | Dreyse & Collenbusch, Sommerda, Germany | 3 |
| D&S | D & S Manufacturing Inc., Route 1, Box 381, Passadumkeag, Maine 04475 | 7 |
| D | Dominion Cartridge Co., Montreal, Quebec, Canada | 3 |
| D | Dum Dum Arsenal, Calcutta, India | 11 |
| D | E. I. Du Pont de Nemours & Co. Wilmington DE | 2 |
| D | Gustav Genschow & Co., Durlach, Germany | 3 |
| D | Königliche Munitions Fabrik, Dresden Royal Munitions Factory (Government Facility), Dresden, Germany | 1 |
| D22 | Unknown Factory, Peoples Republic of China | 15 |
| d53 | Unknown Factory, Peoples Republic of China | 15 |
| DA | Dominion Arsenal, Québec, Canada | 1 |
| DAC | Dominion Arsenal, Québec, Canada | 1 |
| DAG | Dynamit Nobel A-G, Troisdorf, Germany, (previously Geco and DNG Gustav Genchow, Karlsruhe) | 1 |
| DAL | Dominion Arsenal, Lindsay, Ontario, Canada | 11 |
| DAQ | Dominion Arsenal, Québec, Canada | 1 |
| DC | Dominion Cartridge Co. Ltd., Brownsburg, Québec, Canada | 1 |
| DCA | Dominion Arsenal, Québec, Canada | 11 |
| DCCO | Dominion Cartridge Co. Ltd., Montreal, Quebec, Canada | 1 |
| DDDD | DUDS Ammunition and Supply Co., PO Box 363, Barton, Vermont 05822 | 1 |
| de | Hugo Schneider A.-G., Werk Leipzig, Germany | 19 |
| DEN | Denver Ordnance Plant, Denver, CO | 2 |
| DF | Dum-Dum Arsenal, Calcutta, India | 3 |
| DFA | Delta Frangible Ammunition LLC (Formally Delta Defense Inc.), 1235 Jeff Davis Highway Suite 710, Arlington, VA 22202 | 1 |
| DGSN | Direction Générale de la Sûreté Nationale, (National Police), Morocco | 1 |
| DI | Defence Industries Ltd., Canadian Industries Ltd, Park Avenue Plant, Montreal, Canada | 1 |
| DM | Des Moines Ordnance Plant, Des Moines, Iowa | 2 |
| DM | Deutsche Waffen-u. Munitionsfabriken A.-G., , Früher Lorenz , Karlsruhe, Germany | 1 |
| DMK | Deutsche Waffen-u. Munitionsfabriken A.-G., (Previously Deutsche Metall-Patronen-Fabrik), Karlsruhe, Germany | 1 |
| dnb | Borck u. Goldschmidt, Mechanische Werk-stätten für Telegrafie und Telefonie, Berlin 0 l7, Fruchstrasse l-2, Germany | 19 |
| dnf | Rheinisch-Westfälische Sprengstoff A.-G., Werk Nürnberg-Stadeln, Germany | 1 |
| DNG | Dynamit Nobel A.-G., Troisdorf, Germany, (Previously Geco and later DAG, Gustav Genchow, Karlsruhe) | 1 |
| dnh | Rheinisch-Westfälische Sprengstoff A.-G., (Previously Gustav Genschow & Co. ) Werk Durlach, Germany . | 1 |
| dom | Westfälische Metall-Industrie A.-G., Lippstadt, Germany | 7 |
| DOMINION | Dominion Ammunition Division, Canadian Industries Ltd, Montreal, Quebec Canada | 1 |
| dou | Waffenwerke Brünn A.-G., Werk Povázská Bystrica, formally Czech National Arms and Ammunition Factory, Povázská Bystrica, Czechoslovakia under German occupation | 1 |
| DRS | Dansk Rekylriffel Syndikat, Copenhagen, Denmark | 3 |
| DWA | Deutsche Werke A.-G., Berlin, Germany | 1 |
| DWM B | Deutsche Waffen-u. Munitionsfabriken A.-G., Berlin - Borsigwalde, Germany | 1 |
| DWM H | ederlandsche Wapen-en Munitiefabriek NV., "DE KRUITHOORN, 's-Hertogenbosch, Netherlands | 3 |
| DWM K | Deutsche Waffen u. Munitionsfabriken, Karlsruhe, Germany | 1 |
| DWM L | Deutsche Waffen-u. Munitionsfabriken A.-G., (Previously Deutsche Metall-Patronen-Fabrik), Lübeck, Germany | 7 |
| DZ | Unknown Factory, Poland | 15 |
- E - |
| E K | Greek Powder and Cartridge Co., Athens, Greece | 15 |
| E | Eley Brothers, Ltd., London, England | 3 |
| E | Yokosuka Naval Arsenal, Japan (character is a backwards E and is YO in Japanese) | 15 |
| EB | Eley Brothers, Ltd., London, England | 11 |
| eba | Metallwarenfabrik Scharfenberg-u. Teubert G.m.b.H., Breitungen-Werra Germany | 19 |
| EC | Eau Claire Ordnance Plant, Eau Claire, WI | 2 |
| EC | Evansville Ordnance Plant (Chrysler), Evansville, OH | 2 |
| ECCC | Metallwerk Elisenhütte GmbH., Nassau / Lahn, Germany for the European Cartridge Collectors Club | 1 |
| ECS | Evansville Chrysler, Sunbeam Ordnance Plant, Evansville, Indiana. | 8 |
| edq | Deutsche Waffen-und Munitionsfabriken A.-G., Lübeck-Schlutup, Weslörstrasse, Germany | 19 |
| eej | Märkisches Walzwerk G.m.b.H., Strausberg Bez. Potsdam, Germany | 1 |
| eey | Metallwarenfabrik Treuenbritzen G.m.b.H., Werk Röderhof, Germany | 19 |
| EID | Établissements Industriels de Défense, Damascus, Syria | 1 |
| EIGN | Unknown Factory, Yugoslavia | 15 |
| ELD | Eldorado Cartridge Co., Boulder City, Nevada 89005-0308 (wholly owned by Pan Metal Corp. (PMC) of Poongsan, Korea) | 1 |
| ELEY | Arms Corporation of the Philippines, (formally Squires Bingham Co.) Marikina, Republic of the Philippines | 1 |
| ELEY | Eley Brothers, Ltd., London, England | 1 |
| emp | Dynamit A.-G., Werk Empelde, (formally Alfred Nobel & Co.), Empelde, Germany | 1 |
| EMZ | Eurometaal-Zaandam. Zaandam, Netherlands | 15 |
| ENK | Greek Powder and Cartridge Co., Athens, Greece | 1 |
| eom | H. Huck Metallwarenfabrik, Nürnberg, W., Gostenhofer Hauptstrasse 61/63, Germany | 19 |
| EW | Eau Claire Ordnance Plant, Eau Claire, WI | 2 |
- F - |
| F DE C | Fábrica de Municiones del Ejército, Lima, Perú | 15 |
| F DE M | ábrica Nacional de Municiones, Santa Fe, México (near Mexico City) Note: The "F de M actually stands for just Fábrica de Municiones | 1 |
| F TC I | Fabrikalar Iskenderun, Türkiye Cumhuriyeti, (Iskenderun Factory, Turkish Republic) | 1 |
| F | Cartoucherie Française, Paris, France | 3 |
| F | Fábricas y Maestranzas del Ejército, Santiago, Chile | 15 |
| F | Frankford Arsenal, Philadelphia, PA | 3 |
| F | Giulio Fiocchi, Lecco, Italy | 1 |
| F | P.W. U. Fabryka Amunicji, Skarzysko-Kamienna, Poland | 3 |
| F | Small Arms Ammunition Factory No. 1 Footscray, Australia | 11 |
| FA | Frankford Arsenal, Philadelphia, PA | 2 |
| faa | Deutsche Waffen-und Munitionsfabriken A.-G., Karlsruhe, Germany | 1 |
| FAMAE | Fábricas y Maestranzas del Ejército, Santiago, Chile | 15 |
| FAMAP | Fábrica Argentina Militar de Munición de Armas Portátiles, San Lorenzo, Argentina | 15 |
| FAME | Fábrica de Municiones del Ejército, Lima, Perú | 1 |
| FAMMAP | Fábrica Argentina Militar de Munición de Armas Portátiles, San Lorenzo, Argentina | 1 |
| FAS | abryka Amunicji, Skarzysko, Skarzysko-Kamienna, (later "HASAG under German occupation) | 1 |
| fb | Mansfeld A.-G., Abt. Metallwarenfabrik, Werk Rothenburg/Saale, Germany | 1 |
| FC | Departmento de la Industrial Militar, Mexico City, Mexico | 1 |
| FC | Federal Cartridge Corp., Anoka, MN 55303 (also produced in Germany and Austria for Federal) | 1 |
| FC | Prvi Partizan, Titovo, Uzice 31000, Yugoslavia | 1 |
| FCI | Fabrica de Cartuchos de Itajuba, Minas Geraia, Brazil | 15 |
| FCPQ | Fábrica De Cartuchos e Pólvoras Quimicas, Chelas, Portugal | 1 |
| fer | Metallwerk Wandhofen G.m.b.H., Schwerte/Ruhr, Germany | 19 |
| FFV | Förenede Fabriksverken, Karlsborg, Sweden | 1 |
| FIOCCHI | Giulio Fiocchi, Lecco, Italy | 1 |
| FLB | ábrica Militar "Fray Luís Beltran, San Lorenzo, Argentina | 1 |
| FM FLB | Fábrica Militar Fray Luis Beltran, San Lorenzo, Argentina | 1 |
| FM | Établissements Industriels de Défense, Damascus, Syria | 1 |
| FM | Fábrica Militar de Cartuchos de San Lorenzo, San Lorenzo, Argentina | 3 |
| FM | Fábrica Nacional de Municiones, Santa Fe, México (near Mexico City) | 2 |
| FMC SL | ábrica Militar de Cartuchos de San Lorenzo, San Lorenzo, Argentina (formally Fábrica Militar de Munición de Armas Portátiles "Borghi) | 1 |
| FMCSF | Fábrica Militar de Cartuchos San Francisco, San Francisco, Argentina | 1 |
| FME | Fábricas y Maestranzas del Ejército, Santiago, Chile | 1 |
| FMEP | Fábrica de Municiones del Ejército, Lima, Perú | 15 |
| FMG | Fábricas y Maestranzas del Ejército, Santiago, Chile | 15 |
| FMMAP B | ábrica Militar de Munición de Armas Portátiles "Borghi, San Lorenzo, Argentina | 1 |
| FMMAP SF | Fábrica Militar de Munición de Armes Portátiles San Francisco, San Francisco, Argentina | 1 |
| FMSF | Fábrica Militar de San Francisco, San Francisco, Argentina | 1 |
| FMSL | Fábrica Militar San Lorenzo, San Lorenzo, Argentina | 1 |
| FN | Fabrique Nationale d'Armes de Guerre (FN), Herstal, Belgium | 1 |
| FNB | Fabrique Nationale Herstal, Herstal, Belgium | 1 |
| FNC MEXICO | Fábrica Nacional de Cartuchos, Santa Fe, México (near Mexico City) | 15 |
| FNCM | Fábrica Nacional de Cartuchos e Munições, Sao Paulo, Brazil | 7 |
| FNM | Fábrica Nacional de Municiones, Santa Fe, México (near Mexico City) | 3 |
| FNM | Fábrica Nacional de Munições de Armas Ligeiras, Chelas, Portugal | 1 |
| FNM | Unknown Factory, Mexico | 15 |
| FNP | Fábrica Nacional de Palencia, Spain | 1 |
| FNT | Fábrica Nacional de Toledo, currently known as Empresa Nacional Santa Barbara de Industrias Militares, SA Toledo, Spain | 1, 7 |
| FOMU | Fabryka Oruzja i Municje, Prvi Partizan, Uzice, Serbia, Yugoslavia | 1 |
| FP | Unknown Manufacturer-on 7.62mm NATO cartridge from Central Africa | 15 |
| FR | Fábrica do Realengo, Rio de Janeiro, Brazil | 2 |
| FRONTIER | Frontier Cartridge Company Inc., Grand Island, NE 68801 | 1 |
| fva | Draht-u. Metallfabriken G.m.b.H., Salzwedel, Germany | 1 |
| FVV&C | Fitch Van Vechten & Co., New York, NY | 3 |
- G - |
| G B | Deutsche Waffen-u. Munitionsfabriken A.-G., Karlsruhe, Germany | 1 |
| G C CO | Graphite Cartridge Company, Washington, DC | 2 |
| G D | Gustav Genschow & Company, Durlach, Germany | 1 |
| G F.1 | Government Cartridge Factory N°1, probably Enfield, UK 1918 headstamp | 11 |
| G F.3 | Government Cartridge Factory N°3, probably Sparbrook, UK 1918 headstamp | 11 |
| G | Federal Cartridge Corp., Minneapolis, MN | 3 |
| G | Gévelot S. A., (Sociètè Française des Munitions), Paris, France | 3 |
| G | Greenwood & Batley Ltd, UK | 3 |
| GA | Grenfeil & Accles Ltd., Birmingham, UK | 3 |
| GA | Unknown Factory, Singapore (note that this is probably a date code since Singapore used GG for 1977 and GH for 1978 | 15 |
| GB | Greenwood & Batley Ltd, UK | 3 |
| GBF | Greenwood & Batley Ltd, UK | 11 |
| GD | Dynamit Nobel A.-G., Troisdorf, Germany (formally Geco and DNG Gustav Genschow, Karlsruhe) | 1 |
| Ge D | Gustav Genschow & Company, Durlach, Germany | 1 |
| GE | General Electric, Cleveland, OH | 2 |
| GE | Georg Egestorff, Linden, Germany | 3 |
| GEA | Guilford Engineering Associates Inc., 332 Stepstone Hill Road, Guilford, Conn. 06437 | 1 |
| Geco | Dynamit Nobel A/G, Troisdorf, Germany | 1 |
| Geco | Gustav Genschow & Company, Durlach, Germany | 1 |
| GEVELOT | Gévelot S. A., (Sociètè Française des Munitions), Paris, France | 3 |
| GF | G. Egestorff, Linden, Germany | 3 |
| GFL | Giulio Fiocchi, Lecco, Italy | 1 |
| GG&Co | Gustav Genschow & Company, Durlach, Germany | 1 |
| GI | Dynamit Nobel A/G, Troisdorf, Germany | 1 |
| GKB | George Kynoch, Birmingham | 11 |
| GPC | Greek Powder & Cartridge Company, Athens, Greece | 3 |
| GR | eorge Roth & Co., Austria. The letters "GR usually appear in trademark-style, with the letters intertwined | 3 |
| GSF | Unknown Factory, France---used under German occupation in 1944. | 15 |
| GT | Gevelot S.A.,Paris, France on cartridges made for Pakistan in 1950-1960 | 15 |
- H - |
| H&F | Hardy & Fils S.A., 251 Av. Louis, 1050 Bruxelles, Belgium | 1 |
| H | Hirtenberger Patronen-, Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Niederdonau, Austria | 1 |
| H | Rheinische Metallwaren und Maschinenfabrik, Dusseldorf, Germany | 1 |
| H | Winchester Repeating Arms Co., New Haven, CT | 3 |
| HA | Danish Government Arsenal (Ammunitionsarsenalet), Copenhagen, Denmark | 1 |
| HALGER | Rheinisch-Westfälische Sprengstoff A.-G., Nürnberg-U. Germany for Halbe & Gerlich, Hamburg (1922-1929) | 8 |
| HCC | Prvi Partizan, 31000 Titovo, Uzice, Yugoslavia for the Hansen Cartridge Company, Southport CT | 13 |
| HERTER'S | Herters Inc., Waseca, MN (produced in Sweden) | 1 |
| hhw | Metallwerke Silberhütte G.m.b.H., St. Andreasberg i/Harz, Germany | 19 |
| HI-PER | Hi-Performance Cartridge Corp., 133 Blue Bell Rd, Greensboro, NC 27406 | 1 |
| HK | H. Huck Metallwarenfabrik, Nürnburg, Germany | 2 |
| HL | Haerens Laboratorium, Copenhagen, Denmark from 1912 - 1937 | 15 |
| hla | Metallwarenfabrik Treuenbritzen G.m.b.H., Werk Sebaldushof, Germany | 1 |
| hlb | Metallwarenfabrik Treuenbritzen, G.m.b.H., Werk Selterhof, Germany | 3 |
| hlc | Zieh-und Stanswerk G.m.b.H., Werk Schleusingen/Thür., Germany | 3 |
| HN | Royal Ordnance Factory, Hirwaun, UK | 1 |
| HOWITZER | Howitzer Products Limited, Blocks 1-5 Besselsleigh, Abingdon, Oxford OX13 5PZ England (cases produced in US by Starline) | 1 |
| HP | Hirtenberger Patronen-, Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Niederdonau, Austria | 1 |
| hrn | Presswerk G.m.b.H., Metgethen, Ostprussia, Germany | 1 |
| HXP | Greek Powder & Cartridge Company, Athens, Greece | 2 |
- I - (Video) Headstamp (Everything WEAPONRY & MORE)💬⚔️🏹📡🤺🌎😜✅ |
| I | Jubbelpore Arsenal, Jubbelpore, India | 11 |
| IAC | Unknown Factory, West Germany ca'1965 | 15 |
| ICI | Kynoch Works, Imperial Chemical Industries Ltd., Birmingham, UK | 3 |
| IK | Igman Zavod, Konjic, Yugoslavia | 2 |
| IM | Industria Militar, Bogota, Colombia | 1 |
| IMG | Industrias Militares de Guatemala, Guatemala | 8 |
| IMI | Israel Military Industries, Tel Aviv, Israel | 1 |
| IMPA | Industries Metallurgica y Plastica, Argentina | 15 |
| IMPERIAL | Industries Valcartier Inc., Valcartier, Quebec, Canada | 2 |
| INDUMIL | Industria Militar, Bogota, Colombia | 1 |
| INTERARMCO | Fabrique Nationale Herstal, Herstal, Belgium for Interarmco of Virginia, USA | 2 |
| IVI | Industries Valcartier Inc., Valcartier, Quebec, Canada | 1 |
| IWK | Industrie Werke Karlsruhe (formally DWM), Karlsruhe, Germany | 15 |
- J - |
| J-A0A | Asahi-Seiki Manufacturing Co. Ltd., (until 1961, Asahi-Okuma Arms Co. Ltd) ,5050 Asahimae-cho, Owari-Asahi. Asahi, Japan 488 | 1 |
| J-AO | Asahi-Seiki Manufacturing Co. Ltd., (until 1961, Asahi-Okuma Arms Co. Ltd) ,5050 Asahimae-cho, Owari-Asahi. Asahi, Japan 488 | 15 |
| J-CH | Chuo-Kayaku-Kayo-Kaisha Co. , Japan | 15 |
| J-ST | Showa-Kayaku, Inc., Totsuka, Japan | 15 |
| J-TE | Toyo Seiki Manufacturing Co., Ltd. Japan | 7 |
| J | Birmingham Metals & Munitions Co./Nobel, Birmingham, UK | 11 |
| J | are basically interchangeable in German. Archaic spelling of this arsenal was "Jngolstadt. | 1 |
| JE | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 1 |
| JR | J. Roth, Bratislava, Czechoslovakia | 1 |
- K - |
| K-1 | Unknown Factory, Republic of Korea (probably the Army Arsenal in Dongrae before it was purchased by PMC in 1982) | 8 |
| K | Karlsborg Arsenal, Karlsborg, Sweden | 4 |
| K | Kirkee Arsenal, Poona-3, Kirkee, India | 11 |
| K | Kynoch Factories, Imperial Chemical Industries Ltd., Birmingham, England | 1 |
| K | Probably Kaunas Arsenal, Kaunas, Lithuania | 1 |
| K2 | Kynoch (I.C.I.), Standish, UK (1943-1944) | 11 |
| K4 | Kynoch (I.C.I.), Yeading, UK (1942-1944) | 11 |
| K5 | Kynoch (I.C.I.), Kidderminster, UK (1944) | 11 |
| KA | Pusan Government Arsenal, Pusan, Republic of Korea | 2 |
| kam | Hasag Eisen u. Metallwerke G.m.b.H., Werk Skarzysko-Kamienna, Poland (formally Fabryka Amuniciji, Skarzysko, Kamienna) | 1 |
| KC (K&C) | Keller & Co., Hirtenberg, Austria | 3 |
| KF | Kirkee Arsenal, Poona-3, Kirkee, India | 1 |
| KH | Khamaria Arsenal, Khamaria, India | 11 |
| KN | Kings Norton Metal Co. Ltd, Abbey Wood, Kent, UK | 3 |
| KOF | Kenya Ordnance Factory, Kenya | 8 |
| KOPP | KOPP TZP sro, 671 56 Pavlice, Czech Republic (made in Russia) | 1 |
| KP | Lapuan Patruunatehdas, Lapua, Finland. | 8,13 |
| KS | Allegany Ordnance Plant (operated by Kelly-Springfield Tire Co.), Cumberland, MD, USA | 15 |
| KTW | KTW Inc., Lorain, Ohio, (later North American Ordnance Corp, Pontiac, Michigan) | 1 |
| KYNOCH | Kynoch Factories, Imperial Chemical Industries Ltd., Birmingham, England | 1 |
- L - |
| L Y | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 1 |
| L | Lapuan Patruunatehdas, Lapua, Finland | 3 |
| L | Lignose A.-G., Berlin, Germany | 3 |
| L | Lindener Zündhütchen-und Thonwarenfabrik, Hannover, Germany | 1 |
| L | Lorenz Patronenfabrik (Ammunition & Ordnance Co.), Karlsruhe, Germany | 11, 12 |
| LAC | Dominion Arsenal, Lindsay, Australia | 11 |
| LAPUA | Lapuan Patruunatehdas, Lapua, Finland | 1 |
| LB | Leon Beaux & Company, Milan, Italy | 3 |
| LB | Longbow Inc., PO Box 624, Burns Flat, OK 73624 | 1 |
| LBC | Leon Beaux & Company, Milan, Italy | 1 |
| LC | Lake City Ammunition Plant, Lake City, MO | 2 |
| LC | Måtravidèki Fèmmüvek, H-3332 Sirok, Hungary, for: Armscorp USA Inc., Baltimore, MD | 1 |
| LE | Giulio Fiocchi, Lecco, Italy | 1 |
| LIBRA | Libra, 67153 Jevišovice 234-CR, Czech Republic | 1 |
| LM | Cartoucherie du Mans, Le Mans, France | 1 |
| LM | Lowell Ordnance Plant, Lowell, MA, USA (1942-1943) | 15 |
| lpk | Servotechna A.-G., Prague, Czechoslovakia under German occupation | 1 |
| LRS | Lead Recovery Systems, Inc., (a division of 3-D Co.), Doniphan, Nebraska | 1 |
| LVE | Novosibirsk Low -Voltage Equipment Plant Plc., 30A, Stantsionnaya St, Novosikirsk, 630108, Russia | 1 |
- M - |
| M M | Musgrave Manufacturers and Distributors (Pty) Ltd, P O Box 183, Bloemfontein, Republic of South Africa | 1 |
| M&D | M&D Munitions Ltd., Farmington, Long Island, New York 11735 | 1 |
| M&S | Klaus Mayer & Sons, Arnsberg and Neheim-Husten, Germany | 3 |
| M | Ammunitionsfabriken Marieberg, Stockholm, Sweden | 1 |
| M | Birmingham Metals & Munitions Co./Nobel, Birmingham, UK | 11 |
| M | Milwaukee Ordnance Plant, Milwaukee, WI, USA (1942-1943) | 15 |
| M | Munizioni e Cartucce Martignoni, Genoa, ItaLY | 3 |
| M | Standard Electrica, Madrid, Spain (during Spanish Civil War-on 9x19mm) | 15 |
| M+FA | Government Factory, Altdorf, Switzerland | 15 |
| MA | Probably Mukden Arsenal, Mukden China (from the 1920s) | 15 |
| MAL | Syarikat Malaysia Explosives Ltd., Batu-Arang, Malaysia | 1 |
| MANUCAM | Manufacture Camerounnaise de Munitions, Cameroon | 1 |
| MASTER | Master Cartridge Co. (now Georgia Arms), Villa Rica, GA | 1 |
| MAXIM | Maxim Munitions Corp., Waterton, NY | 1 |
| MAYER | Klaus Mayer & Sons, Arnsberg and Neheim-Husten, Germany | 2 |
| MCM | McLearn's Custom Machines, Claremore, Oklahoma | 5 |
| MCM | Munizioni e Cartucce Martignoni, S.p.A., Genoa, Italy | 1 |
| ME | Metallwerk Elisenhütte G.m.b.H., Nassau, Lahn, Germany | 2 |
| MEN | Metallwerk Elisenhütte G.m.b.H., Nassau, Lahn, Germany | 1 |
| MEP | MEP SPOL. S.R.O., Predni KoPanina 61, 164 00 Prague 6, Czech Republic | 1 |
| MESKO | Abbreviation for Marka Export Solidnosc Knokurencyjnosc Otwartosc. The company name is Zaklady Metalowe MESKO, Skarzysko-Kamienna, Poland | 7 |
| METALLVERKEN | AB Svenska Metallverken A.B., Stockholm, Sweden | 1 |
| MEXICO | Fábrica Nacional de Municiones, Santa Fe, México (near Mexico City) | 2 |
| MF | Small Arms Ammunition Factory No. 1 Footscray, Australia | 1 |
| MFS | Magyar Löszergyártó Kft., Mátravidéki Fémmüvek, H-332 Sirok, Hungary | 1 |
| MFS | Munitions Factory, Sundari, Nepal | 1 |
| MFT | Munitionsfabrik Thun, Thun, Switzerland | 1 |
| MG | Marcel Gaupillat & Co., Paris, France | 3 |
| MG | Small Arms Ammunition Factory No. 2 Footscray, Australia | 3 |
| MGM | Manufacture Generale de Munitions, Bourg-les-Valence, France | 3 |
| MH | Military Small Arms Factory No. 3, Hendon, Australia | 1 |
| MI | Robert Paulet & Cie, Société Méridionale d'Industrie, Marseille, France | 1 |
| MIDWAY | Midway Arms Inc., Columbia, MO. | 1 |
| MJ | Small Arms Ammunition Factory N°4, Hendon, Australia | 11 |
| MKE | Makina ve Kimya Endustrisi, Kurumu, Turkey | 1 |
| ML (overlaid) | Magyar Löszermuvek RT, Veszprem, Hungary | 1 |
| MMCo | Mathews Manufacturing Co. (Pty) Ltd, PO Box 8188, Belmont Bulawayo, Rhodesia (now Zimbabwe) | 1 |
| MMM | Manufacturas Metalicas Madrilenas, Spain (1959-1964) | 15 |
| MNAM | Manufacture Nationale d'Armes et de Munitions, Morocco | 1 |
| MQ | Small Arms Ammunition Factory N°5, Rocklea, Australia | 11 |
| MR | Manufacture de Machines du Haut-Rhin, (Manurhin), Mulhouse-Bourtzwiller, France | 1 |
| MRP | Companhia Brasileira de Cartuchos, Santo Andre, Estado de San Paulo, Brazil, for Magtech Recreation Products, Inc., Las Vegas, Nevada (now Magtech Ammunition Company, Madison, Ct. 05443) | 1 |
| MS | Manusaar, West Germany (1957-1963) | 15 |
| MS | Small Arms Ammunition Factory N°7, Salisbury, Australia | 11 |
| MSA | Mines Safety Appliance Co., Pittsburgh, PA | 3 |
| MUNCHEN | Koenigliche Arsenal, Munich, Germany | 8 |
| MUNICO | Industries Valcartier Inc., Montreal, Québec, Canada (Made for Politek Distribution Inc., Québec) | 1 |
| mus | Musgrave Manufacturers and Distributors (Pty) Ltd, P O Box 183, Bloemfontein, Republic of South Africa | 2 |
| MW | Munitions Werke, Schoenebeck a.Elbe, Germany | 1 |
| MW | Small Arms Ammunition Factory N°6, Welshpool, Australia | 11 |
| MYRA | Myra's Sports Stors, Broken Hills, N.S.W., Australia ca 1973 | 15 |
- N - |
| N S | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 7 |
| N | Birmingham Metals & Munitions Co., Birmingham, UK | 11 |
| N | Dum Dum Arsenal, Dum Dum, India | 11 |
| N | National Cartridge Co, Belleville, IL | 3 |
| N | Nitrogen Budapest, Budapest, Hungary | 3 |
| N | P.W.U. Fabryka Amunicji, Skarzyskó-Kamienna, Poland Note: PWU stands for Panstwowe Wytwornie Uzbrojenia (National Factory of Armaments). N usually shown as Norblin the metal supplier | 1, 7 |
| N | Rheinisch-Westfälische Sprengstoff, A.-G., Nuremburg, Germany | 1 |
| N | Unknown Factory, Found in Central Africa | 15 |
| NA | National Arms & Ammunition Co., Birmingham, UK | 11 |
| NACo | Newton Arms Company, Buffalo, NY | 2 |
| NATIONAL | National Cartridge Co., Atlanta, GA 30315 | 1 |
| nbe | Hasag, Eisen-und Metallwerke G.m.b.H., Werk Apparatebau Tschenstochau, Germany | 19 |
| NC | National Conduit & Cable Co., Hastings-on Hudson, NY | 2 |
| ndn | Unknown, probably post-war Czechoslovakia | 1 |
| NEVINS | Nevins Ammunition, Inc., Boise, ID 83709 | 1 |
| NGA | New Generation Ammunition Pty Ltd, Box 9207, Hennopsmeer 0046 R.S.A. | 1 |
| NIC | NORINCO (North China Industries Corp.), Peoples Republic of China | 1 |
| nny | rvi Partizan-Namenska Proizvodnja, Titovo, Uzice 31000, Yugoslavia. These are actually Cyrillic letters equal to "PPU in the Western alphabet. | 1 |
| NORMA | ÅB Norma Projektilfabrik, 670 40 Amotfors, Sweden | 1 |
| NP | ÅB Norma Projektilfabrik, 670 40 Amotfors, Sweden | 3 |
| NPA | New Generation Ammunition Pty Ltd, Box 9207, Hennopsmeer 0046 R.S.A. (contract for Taiwan-NPA=National Police Administration) Cases made by Pretoria Metal Pressings Ltd., Pretoria, Republic of South Africa | 1 |
| NPA | Olympic Arms & Ammunition S. A., Acioupoli, Kulois, Greece (contract for Taiwan-NPA=National Police Administration) Cases made by Sellier & Bellot, Prague | 1 |
| nr | POBEDA, Gorazde, Yugoslavia (now Bosnia-Herzogovina) | 1 |
| NRC | China North Industries Corp., (NORINCO), 7A Yue Tan Nan Jie, Beijing, Peoples Republic of China | 7 |
| nts | resswerk u. Drechslerwarenfabrik, "SPILBA, Jnh. Kaiser & Pichl, Liban Kreis Fitschin/Protektorat, Germany (now part of the Czech Republic) | 7 |
| NWM | ederlandsche Wapen-en Munitiefabriek NV., "DE KRUITHOORN, 's-Hertogenbosch, Netherlands | 1 |
- O - |
| O | Sellier & Bellot, Prague, Vlašim, Czechoslovakia | 1 |
| OFN | Ordnance Factory Nigeria, Lagos, Nigeria | 1 |
| ÖJP | Österreichische Jagdpatronenfabrik, Kramsach, Tirol, Austria | 2 |
| oma | Unknown, probably post-war Czechoslovakia | 1 |
| ONEX | Office National Des Substances Explosives, Hussein Dey, Algeria | 13 |
| ORBEA | Cartucheria Orbea Argentina, Argentina | 3 |
| OS (overlaid) | Oberschlesische A.-G., Schönebeck/Elbe | 1 |
| OTAL | Unknown, Canada | 1 |
| oxo | Teuto Metallwerke G.m.b.H., Osnabrück, Germany | 1 |
| oyj | Ateliers de Construction de Tarbes, France (under German occupation) | 15 |
- P - |
| P-D | Precison Delta Corporation, P.O. Box 128, Ruleville, MS 38771 | 1 |
| P C H | Greek Powder & Cartridge Co., Athens, Greece (ca 1940) | 15 |
| P | Fabrica Nacional de Palencia, Palencia, Spain | 7 |
| P | Fabrique Nationale d'Armes de Guerre (FN), Herstal, Belgium | 1 |
| P | Hirtenberger Patronen-, Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Austria | 1 |
| P | Mátravidéki Fémmüvek Sirok, Sirok, Hungary | 1 |
| P | Patronenfabrik A.-G., Solothurn, Switzerland | 1 |
| P | Peters Cartridge Company, Cincinnati, OH | 2 |
| P | Pirotecnia de Sevilla, Sevilla, Spain | 7 |
| P | Polte, Werk Magdeburg, Magdeburg, Germany | 1 |
| P | Pretoria Metal Pressings Ltd., Pretoria, Republic of South Africa | 1 |
| P | PT Pindad (Persero), under management of PT Bahana Pakarya Industrisi Strategis (Persero). Formerly known as Pabrik Senjata Mesiu. Ammunition factory at Turen Malang, West Java, Indonesia | 13 |
| P120 | Dynamit A.-G., vormals Alfred Nobel & Co., Werk Empelde, Germany | 1 |
| P131 | Deutsche Waffen u. Munitionsfabriken A.-G., Berlin-Borsigwalde, Germany | 1 |
| P132 | Draht-und Metallwarenfabriken G.m.b.H., Salzwedel, Germany | 19 |
| P14A | Waffenwerke Brünn A.-G., Werk Povazská Bystrica, (Later Povazská Strojárne), Povazská, Bystrica, Czechoslovkia under German occupation | 1 |
| P151 | Rheinisch-Westfälische Sprengstoff A.-G., Werk Nürnberg-Stadeln., Germany | 1 |
| P154 | Polte Werk Grüneberg, Grüneberg (Nordbahn), Germany | 3 |
| P162 | Presswerke G.m.b.H., Metgethen/Ostpr., Germany | 19 |
| P163 | Metallwarenfabrik Treuenbritzen G.m.b.H., Werk Selterhof, Germany | 19 |
| P181 | Hugo Schneider A.-G., Leipsig, Germany | 3 |
| P186 | Metallwerk Wolfenbüttel G.m.b.H., Halchterstr. 2l, Germany | 19 |
| P198 | Metallwarenfabrik Treuenbritzen G.m.b.H., Werk Röderhof, Germany | 19 |
| P207 | Metallwerk Odertal G.m.b.H., Odertal (Post Lautaberg/Harz), Germany | 19 |
| P249 | Finower Industrie G.m.b.H., Finow/Mark, Germany | 19 |
| P25 | Metallwarenfabrik Treuenbritzen G.m.b.H, Werk Sebaldushof, Sebaldushof, Germany | 1 |
| P28 | Deutsche Waffen u. Munitionsfabriken A.-G., Karlsruhe, Germany | 1 |
| P315 | Märkisches Walzwerk G.m.b.H., Strausberg bez. Potsdam, Germany | 19 |
| P316 | Westfälische Metall-Industrie A.-G., Lippstadt, Germany | 19 |
| P334 | Mansfeld A.-G. Metallwarenfabrik, Werk Rothenburg/Saale, Rothenburg, Germany | 1 |
| P340 | Metallwerke Silberhütte G.m.b.H., St. Andreasberg i/Harz, Germany | 19 |
| P345 | Silva Metallwerke G.m.b.H., Genthin, Germany | 19 |
| P346 | H. Huck Metallwarenfabrik, Nürnberg, W., Gostenhofer Hauptstrasse 61/63, Germany | 19 |
| P369 | Teuto Metallwerke G.m.b.H., Osnabrück, Germany | 1 |
| P370 | Teuto Metallwerke G.m.b.H., Osnabrück, Klosterstrasse 29, Germany | 19 |
| P379 | Hugo Schneider A.-G., Werk Berlin-Köpenick, Germany | 19 |
| P405 | Rheinisch-Westfälische Sprengstoff A.-G., Werk Durlach (vormals Gustav Genschow), Durlach, Germany | 1 |
| P413 | Deutsche Waffen-und Munitionsfabriken A.-G., Lübeck-Schlutup, Weslörstrasse, Germany | 19 |
| P442 | Zieh-und Stanswerk G.m.b.H., Werk Schleusingen/Thüringen, Germany | 19 |
| P490 | Hugo Schneider A.-G., Werk Altenburg, Germany | 19 |
| P491 | Metallwerk Wandhofen G.m.b.H., Schwerte/Ruhr, Germany | 19 |
| P54S | Showa Kinzoku Ltd., Tokyo, Japan (Ca 1954 for police) | 15 |
| P635 | Gustloff-Werke Otto Eberhardt-Patronenfabrik, Hirtenberg Niederdonau, Austria under German occupation | 1 |
| P67 | Patronen-, Zündhütchen- und Metallwaren-fabrik A.-G. vormals Sellier und Bellot, Germany | 19 |
| P69 | Patronen-, Zündhütchen- und Metallwarenfabrik A.-G. (formerly Sellier & Bellot) Schönebeck a. Elbe, Germany | 3 |
| P90D | Munitionsfabriken vormals Sellier & Bellot, Prag, Fabrik in Vlasim, Occupied Czechoslovakia | 19 |
| P94 | Kabel- u. Metallwerke Neumeyer A.-G., Nürnberg, Germany | 3 |
| pae | Reportedly Hasag, Eisen-und Metallwerke G.m.b.H., Werk Skarzysko-Kamienna, Occupied Poland | 19 |
| Pak | Munitionsfabriken vormals Sellier & Bellot, Prag, Fabrik in Vlasim, Occupied Czechoslovakia | 19 |
| PC | Peters Cartridge Company, Cincinnati, OH | 11 |
| PC | Pirotecnico Esercito-Capua, Capua, Italy | 15 |
| PCCo | Peters Cartridge Company, Cincinnati, OH | 2 |
| Pcdp | Theodor Bergmann & Companie, K.-G., Waffen- und Munitionsfabrik, Werk Bernau, Berlin W62, Kleistrasse 21, Germany | 1 |
| PEC | Pirotecnico Esercito-Capua, Capua, Italy | 1 |
| PENN | Penn Ammo Inc., Delmont, PA 15626 | 1 |
| PETERS | Peters Cartridge Company, Cincinnati, OH | 1 |
| PF | Patronenfabrik Solothurn A/G, Solothurn, Switzerland | 3 |
| PH | Parker Hale, Probably Birmingham, UK | 11 |
| PINDAD | PT Pindad (Persero), under management of PT Bahana Pakarya Industrisi Strategis (Persero). Formerly known as Pabrik Senjata Mesiu. Ammunition factory at Turen Malang, West Java, Indonesia | 7 |
| PJJ | Danish Government Arsenal (Ammunitionsarsenalet) Copenhagen, Denmark-under German Occupation | 1 |
| PK | Pocisk, Spolka Akcyjna, Warsaw, Poland | 3 |
| PKI | Unknown, made in one of the countries that use to be part of Yugoslavia | 13 |
| PM | Proffitt's Machining Inc., Greenback, TN | 1 |
| PMC | Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Angang Ammunition Plant). Note that the "M" is shaped like an upside "W" | 1 |
| PMC | Eldorado Cartridge Corporation (previously Patton and Morgan Corp., and Pan Metal Corp. ) PO Box 62508, Boulder City, NV 89006. The PMC headstamped ammunition for ECC has been made in Korea, the Philippines, Mexico and the Repuclic of South Africa. | 1 |
| PMP | Pretoria Metal Pressings Ltd., Pretoria, Republic of South Africa | 1 |
| pmt | Kabel-und Metallwerke Neumeyer A.-G., Werk München, Germany | 19 |
| PMV | Unknown Factory, Cuba | 15 |
| PNP | ("Peruvian National Police) | 1 |
| PO | Oramil S.A. División A. M., San Sebastián, Spain. PO stands for Plásticas Oramil. | 1 |
| POF | Pakistan Ordnance Factories, Wah Cantt, Pakistan | 1 |
| PP | Prvi Partizan, 31000 Titovo, Uzice, Yugoslavia | 1 |
| PPU | Prvi Partizan, 31000 Titovo, Uzice, Yugoslavia | 1 |
| PRO-LOAD | Pro Load Ammunition Inc., 5180 E. Seltice Way, Post Falls, ID 83854, (Formally: 1120 S. Varney St., Burbank, CA 91502) | 1 |
| PS | Giulio Fiocchi S.p.A., Lecco, Italy | 1 |
| PS | Pirotecnia Militar de Sevilla, Sevilla, Spain | 1 |
| PS | Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Angang Ammunition Plant) | 2 |
| PS | Povázské Strojárne, Povázská Bystrica, Czechoslovakia (now Slovakia) | 1 |
| PSD | Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Dongrae Ammunition Plant) | 7 |
| PSM | abrik Senjata Mesiu (also seen in factory literature as "Pabrik Senjata Munisi), Turen Malang, West Java, Indonesia | 7 |
| PT | Lapuan Patruunatehdas, Lapua, Finland. "VPT" headstamp with the "V" removed | 13 |
| Pu | Unknown (Perhaps Burgsmüller, Kreiensen, Germany) | 1 |
| PX | Unknown Factory, France | 15 |
- Q - (Video) NIKOLAS CRUZ PENALTY PHASE | DAY 10 - PART 1 |
| Q | Made by Sellier & Bellot, Prague, Czech Republic Factory in Vlasim for Qutar | 13 |
| QC | Unknown Factory, Republic of Vietnam (South Vietnam) | 15 |
| qrb | Pirotecnico de Bologna, Bologna, Italy under German occupation | 1 |
- R - |
| R-P | Remington Arms Company, Inc., Bridgeport CT , and later: Lonoke, AR (also used by CDM of Mexico) | 1 |
| R (in shield) | Rheinisch-Westfälische Sprengstoffe A-G, Nürnberg, Germany | 14 |
| R | Dominion Cartridge Co., Montreal, Quebec, Canada for T Eaton Co. of Toronto in 1930 | 8 |
| R | Fábrica do Realengo, Rio de Janeiro, Brazil | 2 |
| R | Robin Hood Ammunition Co., Swanton, VT | 3 |
| RA | A/S Raufoss Ammunisjonsfabrikker, Raufoss, Norway | 1 |
| RA | Remington Arms Co., Bridgeport, CT | 1 |
| RANO | Jointly loaded by A/S Raufoss Ammunisjonsfabrikker, Raufoss, Norway and AB Norma Projektilfabrik, 670 40 Amotfors, Sweden | 2 |
| RAUFOSS | A/S Raufoss Ammunisjonsfabrikker, Raufoss, Norway | 2 |
| RC | Raleigh Cycle Co. Ltd, UK | 15 |
| RD | Armería F. A. San Cristóbal, San Cristóbal, Dominican Republic | 1 |
| REM-UMC | Remington Arms Co., Bridgeport, CT (also used by CDM of Mexico and CBC of Brazil) | 1 |
| rfo | Deutsche Waffen u. Munitionsfabriken A.-G., Berlin-Borsigwalde Factory, Berlin, Germany | 1 |
| RG | Royal Ordnance Factory Radway Green, Radway Green, UK | 1 |
| RH | Raleigh Cycle Co., Lts., Nottingham, England, UK | 15 |
| RHACo | Robin Hood Ammunition Co., Swanton, VT | 3 |
| RL | Royal Laboratory, Woolwich, England | 1 |
| RM S | Rheinische Metallwaren-und Maschinenfabrik, Abteilung Sömmerda. Sömmerda, Germany | 1 |
| RNADC | Royal Naval Armament Depot, Caerwent, Wales, United Kingdom | 1 |
| ROFB | Royal Ordnance Factory Birtley, Birtley, County Durham UK | 1 |
| RORG | Royal Ordnance Factory Radway Green, Radway Green, UK | 1 |
| RPA | Republic of the Philippines Army, Government Arsenal, Department of National Defense, Camp General Antonio Luna, Limay, Bataan, Republic of Philippines | 7 |
| RPR | ("People's Republic of Romania) | 1 |
| RRCo | Ross Rifle Co, Quebec, Canada | 2 |
| RS | Unknown Factory, France | 15 |
| RTA | Royal Thai Army Arsenal, Bangkok, Thailand | 2 |
| RVB | Riverbrand Co., Australia Which merged with Myra's Sport Stors in 1977 | 15 |
| RW | Rudge Withworth Co., Nottingham, UK (1914-1918) | 11 |
| RWS | Rheinisch-Westfälische Sprengstoff A.-G., Nürnberg-U. Germany | 1 |
| RY | Établissements Rey Frères, Nîmes, France | 1 |
- S - |
| S A CORP | Savage Repeating Arms Co, Utica NY | 3 |
| S&B | Sellier & Bellot, Prague, Czechoslovakia (now Czech Republic) Factory in Vlasim | 1 |
| S&W-F | Smith & Wesson - Fiocchi Inc., Alton, Illinois | 1 |
| S&W | Smith & Wesson Ammunition Company, Rock Creek, Ohio, 44084 | 1 |
| S | Dum Dum Arsenal, Dum Dum, India | 11 |
| S | Israeli Military Industries, Tel Aviv, Israel | 1 |
| S | Königliches Munitionsfabrik, Spandau, Spandau, Germany | 1 |
| S | Pirotecnia Militar de Sevilla, Sevilla, Spain | 3 |
| S | Sako A. B., (Suojeluskuntain Ase-je Konepa ja Oy), Riihimaki, Finland | 1 |
| S | Unknown Factory, France | 15 |
| SA | Cartagena, Spain | 15 |
| SA | Israeli Military Industries, Tel Aviv, Israel | 1 |
| SA | Southern Ammunition Company, Route 1, Box 6B, Latta, SC 29565 | 1 |
| Sako | Sako A. B., (Suojeluskuntain Ase-je Konepa ja Oy), Riihimaki, Finland | 1 |
| Sam's | Omark Industries, CCI-SPEER/Sporting Equipment Division, PO Box 856, Lewiston, ID 83501. A trial headstamp made for Walmart Stores, but not accepted. | 1 |
| SAM | South African Mint, Pretoria, Republic of South Africa (Subsequently Pretoria Metal Pressing Ltd.) | 1 |
| SANDIA | Sandia Die and Cartridge Company, Albuquerque, New Mexico 87123 | 1 |
| SARA | Cartridges with the "SARA headstamp are commeratives made for SARA | 1 |
| SAT | Finland | 15 |
| SAVAGE | Savage Repeating Arms Co, Utica NY | 2 |
| SAW | Sage Ammunition Works, Middletown, CT | 3 |
| SB-T | Empresa Nacional Santa Barbara de Industrias Militares, SA Toledo, Spain | 1 |
| SB | Arms Corporation of the Philippines, (formally Squires Bingham Co.) Marikina, Republic of the Philippines | 1 |
| SB | Empresa Nacional Santa Barbara de Industrias Militares SA, Toledo, Spain | 1 |
| SB | Israeli Military Industries, Tel Aviv, Israel | 1 |
| SB | Sellier and Bellot, Schoenbeck/Elbe, Germany | 15 |
| SBP | Sellier & Bellot, Prague, Czechoslovakia (now Czech Republic) Factory in Vlasim | 1 |
| SCB | Cartoucherie Belge, Liege, Belgium | 3 |
| SCC | Standard Cartridge Company, Pasadena, CA | 1 |
| SEL | Omark Industries , CCI-Speer / Sporting Equipment Division, Lewiston ID 83501 USA | 1 |
| SF | Fábrica Militar de Cartuchos San Francisco, San Francisco, Argentina | 1 |
| SF | Société Française des Munitions, (Gévelot S. A.), Place Jules Gévelot, 92310 Issy-Les-Moulineaux, France | 1, 7 |
| SFM | Société Française des Munitions, (Gévelot S. A.), Place Jules Gévelot, 92310 Issy-Les-Moulineaux,, France | 1, 7 |
| SGA | Singapore | 15 |
| SINTOX | Dynamit Nobel A-G, Troisdorf, Germany. Trademark spelling for Non-Toxic ammunition | 1 |
| SK | Povázské Strojárne, Povázská, Bystrica, Czechoslovakia (now Slovakia). Made for SK Jagd- und Sportsmunitions GmbH, Schönebeck (Elbe), Germany | 1 |
| SK | Showa Kinzoku Kogyo Co., Ltd., Japan | 2 |
| SK | Tulski Patronny Zavod, (Tula Cartridge Works), Tula, Russia. Probably originally intended for SK Jagd- und Sportsmunitions GmbH, Schönebeck (Elbe), Germany, but sold in the U.S. in Tula boxes | 1 |
| SKD | Selve Kronbiegel Dornheim A.-G., Sommerda, Germany | 3 |
| SKN | aklady Metalowe "MESKO for SK-Nimrod GmbH, Schönebeck, Germany | 1 |
| SL | St Louis Ordnance Plant, St Louis, MO | 2 |
| SLS | portnovi a Lovecke Strelivo, "SLS Ammunition brand, P. O. Box B16, 530 01 Pardubice, Czech Republic | 7 |
| SM | AB Svenska Metallverken, Stockholm, Sweden | 1 |
| SMC | Symington Machine Corp, Rochester, New York | 8 |
| SMCO | Stant Manufacturing Co. Connersville, IN | 2 |
| SME | Sellier & Bellot, Prague, Czech Republic, Factory in Vlasim for SME Ordnance Sdn Bhd (SMEO), Lot 5065, Locked Bag No. 101, 48109 Batu Arang, Selanger Darul Ehsan, Malaysia | 7 |
| SMI | Società Metallurgica Italiana, Campo Tizzoro, Italy | 1 |
| SMP | Uniknown, Yugoslavia | 13 |
| SNC | SNC Industrial Technologies Inc., (Formally Industries Valcartier Inc.), Valcartier, Quebec, Canada | 1 |
| SO | Sako A. B., (Suojeluskuntain Ase-je Konepa ja Oy), Riihimaki, Finland | 1 |
| SOS | Unknown Factory, Austria | 7 |
| SP | stands for "Servicio de Policía | 1 |
| SP | Scorzato Hermanos & Cia Ltd., Lujan, Argentina | 3 |
| SP | Swartklip Products (Pty.) Ltd., Cape Town, South Africa. Also formerly known as RMC - Ronden Manufacturing | 8 |
| SPC | Sociadade Portuguesa de Cartucheria, Portugal | 1 |
| SPEER | Omark Industries , CCI-Speer / Sporting Equipment Division, Lewiston ID 83501 USA | 1 |
| SR | Royal Ordnance Factory Spennymoor, UK (1913-1945) | 11 |
| ST | Royal Ordnance Factory, Steaton | 15 |
| suk | Deusche Waffen u. Munitionsfabriken A-G., Karlsruhe, Germany | 1 |
| SUPER-VEL | Super Vel Cartridge Company, Shelbyville, IN | 2 |
| Super X | Western Cartridge Co., East Alton, IL | 2 |
| SUPER | SuperCartridge Pty., Ltd., Victoria, Australia | 15 |
| SWN | Royal Ordnance Factory. Swynnerton, UK | 15 |
| SYI | Società Metallurgica Italiana, Campo Tizzoro, Italy (used in the mid 1950s for an off-shore contract) | 15 |
- T - |
| T | Empresa Nacional Santa Barbara de Industrias Militares, SA Toledo, Spain | 1 |
| T | Munitionsfabrik Thun, Thun, Switzerland | 1 |
| T | Tula Arsenal, Tula Russia | 15 |
| TA | Israeli Military Industries, Tel Aviv, Israel | 1 |
| TA | Thai Arms, Bangkok, Thailand | 1 |
| TC | Unknown Factory, Turkey | 15 |
| TCW | Tula Cartridge Works (Tulski Patronny Zavod), 139 Marata St., 300004, Tula, Russia | 1, 7 |
| TE | Cartoucherie de Toulouse, Toulouse, France | 1 |
| TE | Toyo Seiki, Ltd., Tokyo, Japan | 15 |
| TEXAS | Texas Ammunition Co. Ballinger, Texas (www.texas-ammo.com) Cases by Starline | 8 |
| TH | Royal Ordnance Factory Thorp Arch, Thorp Arch, England | 1 |
| TH | Unknown Factory, France | 15 |
| tko | Deutsche Waffen-und Munitionsfabriken A.-G., Lübeck-Schlutup, Weslörstrasse, Germany | 19 |
| TOYO | Toyo Seiki Mfg. Co., Ltd., Japan | 7 |
| TPE | Unknown Manufacturer, UK | 1 |
| TPZ | Tulsky Patronney Zavod, (Tula Cartridge Works), 139 Marata St., 300004 Tula, Russia | 7 |
| TR | Dominion Rubber & Munitions Co., Three Rivers, Québec, Canada | 11 |
| TRITON | Triton Cartridge Corporation, P. O. Box 50 (Mailing Address), 2 Briar Lane, Wappingers Falls, New York 12590 | 7 |
| TS | Atelier de Construction de Tarbes, Tarbes, France | 1 |
| TS | Toyo Seiki Mfg. Co., Ltd., Japan | 7 |
| TW | Twin Cities Ordnance Plant, Minneapolis, MN | 2 |
| TZ | Israeli Military Industries, Tel Aviv, Israel | 1 |
| TZZ | Israeli Military Industries, Tel Aviv, Israel | 1 |
- U - |
| U | Kimberley Branch Mint, Kimberley, Republic of South Africa | 11 |
| U | Remington Arms Co., Bridgeport, CT | 3 |
| U | Rheinisch- Westfälische Sprengstoff A.-G., Nuremburg, Germany | 3 |
| U | Union Metallic Cartridge Co., Bridgeport, CT | 3 |
| U | Utah Ordnance Plant, Salt Lake City, UT | 2 |
| UMC | Union Metallic Cartridge Co., Bridgeport, CT | 1 |
| UN | H. Utendoerffer, Nuremberg, Germany | 1 |
| US | United States Cartridge Co., Lowell, MA | 2 |
| USCCO | United States Cartridge Co., Lowell, MA | 1 |
| UT | Utah Ordnance Plant, Salt Lake City, UT | 2 |
- V - |
| va | Kabel- u. Metallwerke Neumeyer A.-G., Nuremberg, Germany | 1 |
| VALMET | Valtion Patruunatehdas, Lapua, Finland | 15 |
| VAPEX | Unknown Factory, Russia | 13 |
| VC | Canadian Industries Limited (C-I-L,) Verdun, Quebec, Canada | 2 |
| VE | Cartoucherie de Valence, Valence, France | 1 |
| VEN | Ministerio de la Defensa, Servicio de Armamento, Arsenal, Fábrica de Municiones, Probably located at: Apartado Postal 66.459.1061, Urb. Las Mercedes, Calle Jalisco, Caracas 1060, Venezuela | 3, 7 |
| VMT | Valtion Metallitehtaat, Helsinki, Finland | 3 |
| VPT | Valtion Patruunatehdas, Lapua, Finland | 1 |
| VS | Unknown Factory, France | 15 |
| VZK | Vereinigte Zünder - und Kabelwerke A.-G., Meissen/Elbe (Saxe), Germany | 7 |
- W - |
| W-W | Winchester-Western (Olin), East Alton, IL | 1 |
| W | Winchester Repeating Arms Co., Bridgeport CT | 2 |
| wa | Hugo Schneider A.-G., Werk Leipzig, Germany | 1 |
| wb | Hugo Schneider A.-G., Werk Berlin-Köpenick, Germany | 19 |
| WCC | Western Cartridge Company (Olin), East Alton, IL | 1 |
| WESTERN | Western Cartridge Company (Olin), East Alton, IL | 1 |
| wg | Hugo Schneider A.-G., Werk Altenburg, Altenburg, Germany | 3 |
| WIN | Olin Corp., East Alton, IL 62024, USA | 1 |
| WINCHESTER | Olin Corp., East Alton IL 62024, USA | 13 |
| WISE | J. B. Wise Inc, Watertown, NY | 2 |
| WOLF | Tula Cartridge Plant JSC, 139 Marat St., Tula 300035, Russia | 13 |
| WRA | Winchester Repeating Arms Co., Bridgeport, CT | 1 |
| WRACO | Winchester Repeating Arms Co., Bridgeport, CT | 1 |
| WWG | W. W. Greener, Birmingham, England | 3 |
- X - |
| X | Hovedarsenalet Laboratorium, Copenhagen, Denmark | 5 |
| X | Povázské Strojárne, Povázská Bystrica, Czechoslovakia (now Slovakia) | 3 |
| X | Used on German 9mm Para and 32ACP cartridges for use with silencers. Probably made by: Rheinisch-Westfälische Sprengstoff A.-G., Werk Durlach, Germany | 7 |
| XL | Federal Cartridge Corp, Minneapolis MN | 3 |
- Y - (Video) 223 -vs- 5.56: FACTS and MYTHS |
| NONE | NONE | NONE |
- Z - |
| Z | Zbrojovka Brno, Brno, Czechoslovakia | 1 |
| Z28 | Unknown Factory, Zambia | 13 |
| ZERO | Zero Ammunition Company, 1601 22nd Street, S.E., Cullman, Alabama 35056-1188 | 7 |
| ZI | Unknown Factory, Zimbabwe | 13 |
| ZV | Sellier & Bellot, Prague, Czechoslovakia (now Czech Republic) Factory in Vlasim | 13 |
The following headstamps have been reported to exist, but it is strongly suspected they do not occur on small arms ammunition.
If you have encountered this code on any ammunition, even if it is not small arms ammunition, please contact us with the details.