The Carl Gustafs Stads Gevärsfaktori AK4 is a sweden-made select-fire rifle chambered in 7.62x51mm NATO, introduced in 1964. Primary use: military. Type: Rifle Action: Select-Fire Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 1964, Sweden Weight: 128 oz Overall length: 49.5" Status: Discontinued Intended use: military