The [b]Thompson[/b] is a .45 caliber American [[submachine gun]], invented by John Talifero Thompson in 1919. It was initially marketed to the law enforcement officers as "Thompson's anti-bandit gun", but eventually became widely associated with the [[mafia]]. The [[weapon]] earned various nicknames such as the "Tommy Gun," the "Trench Broom," the "Trench Sweeper," the "Chicago Piano," the "Chicago Typewriter," and the "Chopper." The [[gun|Thompson]] was adopted by the US Army during the [[World War II]], and remained in service until the Vietnam War.

This tag applies to all Thompson variants such as:
* !post #3628555: The original [b]M1921[/b] and [b]M1928 Thompson[/b]. Features a finned barrel, a charging handle knob, [[vertical foregrip]] with finger grooves, adjustable iron sights, and accepts [[drum magazine]]s. 
* !post #5103708: Pre-WWII [b]M1928A1 Thompson[/b] (with rectangular handguard).
* !post #2362155: [B]M1/M1A1 Thompson[/b]. WWII-era simplified design with rectangular handguard, lack of muzzle device, charging handle on the right, and accepts only stick [[magazine (weapon)|]].

h4. See also
* [[List of Weapons]]
* [[M3 submachine gun]]
* [[Thompson (Girls' Frontline)]]
h1. External links
* Wikipedia: "Thompson submachine gun":https://en.wikipedia.org/wiki/Thompson_submachine_gun
トミーガン シカゴタイプライター トンプソン・サブマシンガン M1928