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The submachine gun. Really, these are machine pistols, because they fire the same ammunition as pistols. Colonel Thompson invented the Thompson Sub-Machine Gun ("Tommy Gun") as a "Trench Broom", but the design was perfected too late for the weapon to see service in the war. It fired the same powerful .45 caliber ACP cartridges as the standard US sidearm, the Model 1911 Colt Automatic Pistol.

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15y ago

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