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The M3 is an American .45-caliber submachine gun adopted by the U.S. Army on 12 December 1942, as the United States Submachine Gun, Cal. .45, M3. [12] The M3 was chambered for the same .45 ACP round fired by the Thompson submachine gun , but was cheaper to mass produce and lighter, at the expense of accuracy. [ 12 ]
M3/M3A1 Grease Gun (.45 ACP/9×19mm Parabellum) Madsen M50 (9×19mm Parabellum) Walther MPL/MPK (9×19mm Parabellum) Mk 24 Mod 0 (Smith & Wesson Model 76; 9×19mm Parabellum) Carl Gustav M/45 (9×19mm Parabellum) Model 50/55 Reising (.45 ACP) M2 submachine gun (Hyde-Inland M2, .45 ACP) M42 submachine gun (United Defense M42, .45 ACP/9×19mm ...
The Pistola Ametralladora, often shortened as the PAM submachine gun, is a series of two Argentine submachine guns (the PAM-1 and PAM-2) that were licensed variants of the American M3A1 'Grease Gun'. The main difference between the PAM series and the M3A1 was that the PAM was chambered in 9×19mm Parabellum instead of the M3's .45 ACP. [1]
It succeeded at both goals, but it was almost immediately replaced by the cheaper grease gun. Used 20-round or 30-round Thompson magazines. M3 and M3A1 submachine gun: Submachine gun Close-quarters, personal security: Blowback, open bolt United States: General Motors.45 ACP: 91 450 1943 655363 3.61-3.70 30-round magazine. M50 Reising submachine ...
Chauchat-Ribeyrolles 1918 submachine gun: Ribeyrolles, Sutter and Chauchat (RSC) 8×50mmR Lebel France: 1918 SMG PDW Chropi GP10 submachine gun: Chropi 9×19mm Parabellum.45 ACP Greece: 1975 SMG Choroszmanów submachine gun: Grzegorz Choroszman 7.62×25mm Tokarev Poland: 1943 SMG CMMG MkG: CMMG .45 ACP United States: 2017 SMG Colt 9mm SMG
An improved Hyde-Inland 2 was designated U.S. Submachine gun, Caliber .45, M2 as a substitute standard for the M1 Thompson in April 1942. As Inland's manufacturing capacity became focused on M1 carbine production, the US Army contracted M2 production to Marlin Firearms in July 1942.
Reising's only competitor was the .45 ACP Thompson submachine gun. [4] The US Army first tested the Reising in November 1941 at Fort Benning, Georgia. During this test, several parts failed due to poor construction. Once this was corrected, a second test was made in 1942 at Aberdeen Proving Ground, Maryland.
The M1A1 Thompson submachine gun on display at the Virginia War Museum. The M1A1, standardized in October 1942 as the United States Submachine Gun, Cal. .45, M1A1, could be produced in half the time of the M1928A1, and at a much lower cost. The main difference between the M1 and M1A1 was the bolt.