Carl Gustafs AK4, Swedish Army G3-variant produced under HK license. Roller-delayed blowback with 17.3-inch barrel. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 1965, Sweden Weight: 10 oz Overall length: 40.2" Status: Discontinued Military use: Yes Intended use: Military, Collector