A Mini Uzi and a Heckler & Koch MP5K, two common submachine guns
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-"). As a machine gun must fire rifle cartridges to be classified as such, submachine guns are not considered machine guns.
The submachine gun was developed during World War I (1914–1918) as a close quarter offensive weapon, mainly for trench raiding. At its peak during World War II (1939–1945), millions of submachine guns were made for assault troops and auxiliaries whose doctrines emphasized on close-quarter suppressive fire. New submachine gun designs appeared frequently during the Cold War,[2] especially among special forces, covert operation commandos and mechanized infantrymen. Submachine gun usage for frontline combat decreased in the 1980s and 1990s,[2] and by the early 21st century, submachine guns have largely been replaced by assault rifles,[2] which have a longer effective range, have increased stopping power, and can better penetrate the helmets and body armor used by modern soldiers.[3] However, they are still used by security forces, police tactical units, paramilitary and bodyguards for close-quarters combat because they are "a pistol-caliber weapon that's easy to control, and less likely to overpenetrate the target".[3]
In the United States, submachine guns have long stereotypical association with organized crime, criminal gangs, and violence. The use of submachine guns by the Chicago Outfit, as well as numerous cases of gun violence (including school shooting), has contributed the rise of the stereotype.
^"The Thompson submachine gun: shooting a 20th century icon. - Free Online Library".
^ abcMilitary Small Arms Of The 20th Century. Ian Hogg & John Weeks. Krause Publications. 2000. p93
^ ab"Submachine Guns (SMG's): Outpaced by Today's Modern Short-Barreled Rifles (SBR's)/Sub-Carbines, or Still a Viable Tool for Close Quarters Battle/Close Quarters Combat (CQB/CQC)?". DefenseReview.com. Retrieved 2023-06-19.
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