The S&T Daewoo K1A1 is the Republic of Korea Armed Forces standard submachine gun, chambered in 5.56x45mm NATO rather than a pistol caliber. This unusual choice provides commonality with the K2 rifle. Semi-auto only variants were produced in limited quantities. Type: Semi-Auto Carbine Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 1981, South Korea Weight: 6.6 oz Overall length: 23.1" Status: Active Military use: Yes Intended use: Duty, Collecting