General John T. Thompson designed the Thompson, commonly known as the Tommy Gun. It was considered a wartime model of the popular M1 because of its cost efficiency. That was the last military Thompson submachine gun to be produced. In 1971, the U.S. military discontinued use of the Thompson M1A1, ending 33 years of service.
- Category: Full Automatic
- Country of Origin: USA
- Caliber: .45 ACP
- Action: Blowback, open bolt
- Rate of Fire: 600 rounds per minute
- Muzzle Velocity: 985 feet per second
- Effective Range: 150 feet