A submachine gun (SMG) is a magazine -fed automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, [1] to describe its design concept as an automatic firearm with notably less firepower than a machine gun (hence the prefix "sub-").

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This is a list of submachine guns. It includes Submachine guns (SMG), Machine pistols (MP), Personal defense weapon systems (PDW), and "compact submachine gun-like weapons" not easily categorized. Weapons may fit in more than one category. 1992-? 1950/1953-? 2008-? 1995/1996-? 1984-? 1998-? 1990-? 1993-? 1999/2004-? 1964-? 1985-?

冲锋枪（英語： submachine gun ，缩写：SMG，直译“亚机关枪”），旧译手提机枪或手提轻机枪，一般泛指设计上用来由抵肩射击的风冷、弹匣／弹鼓供弹、可以自动射击发射手枪弹的轻型单兵 长管枪械，与同样是速射自动武器的机枪的差别在不使用全威力的步枪弹。

The Vector SMG variant is only available for military and law enforcement use. It features a 5.5-inch barrel (with an option of a 6.5-inch barrel on the Gen II version), a folding stock, flip-up Midwest Industries back-up iron sights (BUIS) (KRISS Sights on Gen II weapons), a full-length Picatinny rail for mounting various optics/scopes, and ...

SuperMemeGuardian3 (formerly known as SuperMarioGlitchy3 until WOTFI 2021), abbreviated as SMG3 or colloquially as Three, is one of the three tritagonists (alongside Bob Bobowski and Fishy Boopkins) of the SMG4 series.

SMG1 and SMG2 are from the Old Universe, as revealed through computer logs in SMG1's Guardian Pod. This universe, now lifeless, was once visited by SMG4, SMG3, and Mario. It was constructed based on a fictional 1982 1v1 shooter game, Mage. Spudnick is the avatar that SMG1 and SMG2 interacted with in the Toytoy Kingdom.

A submachine gun or SMG is a select-fire weapon, either handheld (machine pistols) or shoulder-fired, that fires pistol-caliber rounds. Its primary role was that of a close-quarters weapon; it has since been replaced by short-barreled rifles (carbines) for this purpose.

The SMG is a submachine gun featured in almost all the games in the Grand Theft Auto series since Grand Theft Auto: Vice City, with the exception of Grand Theft Auto Advance. It is referred to as MP in GTA Vice City (or as MP5 in the PlayStation 2 version), while in all other Grand Theft Auto games it is called SMG .

The Colt 9mm SMG, and its select fire variant, the Colt SMG M635, is a 9×19mm Parabellum high rate of fire submachine gun designed and manufactured by Colt and based off of the M16 design. The Colt 9mm SMG started production in 1982, and still manufactures it today.