JSC Kalashnikov Concern, known until 2013 as the Izhevsk Machine-Building Plant, is a Russian defense manufacturing concern and joint-stock company headquartered in the city of Izhevsk in the Republic of Udmurtia as well as the capital city of Moscow. The concern designs and produces a wide range of civilian and military weapons including assault rifles, sniper rifles, designated marksman rifles, machine guns, squad automatic weapons, hunting rifles, shotguns, guided artillery projectiles, and a wide range of other precision weapons including remote controlled weapon stations, unmanned vehicles and military robots.

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, to describe its design concept as an automatic firearm with notably less firepower than a machine gun. As a machine gun must fire rifle cartridges to be classified as such, submachine guns are not considered machine guns.