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Submachine Gun, Cal. .45, M1928A1, Thompson
Submachine Gun, Cal. .45, M1/M1A1 Thompson

The M1928A1 "Tommy Gun", a delayed blowback submachine gun, was issued to armored and reconnaissance units. It was selective for semi- or fully-automatic fire. It fired a .45 cal. cartridge in 20- or 30-round magazines, or a 50-round drum. It had a leaf with aperture notch battle sight. It's rate of fire was 600-725 spm. The M1928A1 had a removable buttstock. Most had a horizontal fore grip, but some had a vertical fore grip. The M1928A1 was relatively heavy, and expensive in use of materials, machine time, and machine tools.

The Submachine Gun, Cal. .45, M1/M1A1 Thompson was a blowback submachine gun. It was selective for semi- or fully-automatic fire. It fired a .45 cal. cartridge in 20- or 30-round magazines. It's rate of fire was 700 spm. The gun was reliable, and continued to operate when similar weapons would have failed due to exposure to battle-field conditions (354,000).


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