<Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (February 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (February 2014) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Thompson Submachine Gun, Caliber . 45 </Th> </Tr> <Tr> <Td_colspan="2"> M1928A1 Thompson wartime production variant </Td> </Tr> <Tr> <Th> Type </Th> <Td> Submachine gun </Td> </Tr> <Tr> <Th> Place of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th_colspan="2"> Service history </Th> </Tr> <Tr> <Th> In service </Th> <Td> <P> 1938--1971 (officially, U.S. military) </P> 1938--present (other countries) </Td> </Tr> <Tr> <Th> Used by </Th> <Td> See Users </Td> </Tr> <Tr> <Th> Wars </Th> <Td> <Ul> <Li> Banana Wars </Li> <Li> Irish Civil War </Li> <Li> World War II </Li> <Li> Indonesian National Revolution </Li> <Li> Chinese Civil War </Li> <Li> First Indochina War </Li> <Li> Greek Civil War </Li> <Li> Korean War </Li> <Li> Vietnam War </Li> <Li> The Troubles </Li> <Li> Bosnian War </Li> <Li> and numerous others </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Production history </Th> </Tr> <Tr> <Th> Designer </Th> <Td> John T. Thompson </Td> </Tr> <Tr> <Th> Designed </Th> <Td> 1917--1920 </Td> </Tr> <Tr> <Th> Manufacturer </Th> <Td> <Ul> <Li> Auto - Ordnance Company (originally) </Li> <Li> The Birmingham Small Arms Company Limited </Li> <Li> Colt </Li> <Li> Savage Arms </Li> <Li> RPB Industries </Li> </Ul> </Td> </Tr> <Tr> <Th> Produced </Th> <Td> 1921--1945 </Td> </Tr> <Tr> <Th> No. built </Th> <Td> Approx . 2,000,000 </Td> </Tr> <Tr> <Th> Variants </Th> <Td> See Variants section </Td> </Tr> <Tr> <Th_colspan="2"> Specifications </Th> </Tr> <Tr> <Th> Weight </Th> <Td> <Ul> <Li> 10.8 lb (4.9 kg) empty (M1928A1) </Li> <Li> 10.6 lb (4.8 kg) empty (M1A1) </Li> </Ul> </Td> </Tr> <Tr> <Th> Length </Th> <Td> <Ul> <Li> 33.5 in (850 mm) (M1928A1) </Li> <Li> 32 in (810 mm) (M1 / M1A1) </Li> </Ul> </Td> </Tr> <Tr> <Th> Barrel length </Th> <Td> <Ul> <Li> 10.5 in (270 mm) </Li> <Li> 12 in (300 mm) (with Cutts compensator) </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Cartridge </Th> <Td>. 45 ACP (11.43 × 23mm) </Td> </Tr> <Tr> <Th> Action </Th> <Td> Blowback, Blish Lock </Td> </Tr> <Tr> <Th> Rate of fire </Th> <Td> 600--725 rpm (M1928), 700 rpm (M1A1), 1500 rpm (M1919) </Td> </Tr> <Tr> <Th> Muzzle velocity </Th> <Td> 935 ft / s (285 m / s) </Td> </Tr> <Tr> <Th> Effective firing range </Th> <Td> 150m </Td> </Tr> <Tr> <Th> Feed system </Th> <Td> <Ul> <Li> 20 - round stick / box magazine </Li> <Li> 30 - round stick / box magazine </Li> <Li> 50 - round drum magazine </Li> <Li> 100 - round drum magazine </Li> </Ul> (M1 and M1A1 models do not accept drum magazines) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Thompson Submachine Gun, Caliber . 45 </Th> </Tr>

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