The Sterling Armaments L2A3 Sterling SMG is a united kingdom-made select-fire submachine gun chambered in 9mm Luger, introduced in 1944. Primary use: military. Type: Submachine Gun Action: Select-Fire Caliber: 9mm Luger Capacity: 25 Year introduced: 1944, United Kingdom Weight: 88 oz Overall length: 24" Status: Discontinued Intended use: military