The Heckler and Koch G3 is a roller-delayed blowback battle rifle adopted by the West German Bundeswehr in 1959 and used by over 40 nations. Derived from the Spanish CETME and ultimately from the Sturmgewehr 45 designed by Mauser engineers at the end of WWII, it established HK as a major military supplier and spawned an enormous family of derived weapons. Type: Rifle Action: Semi-Automatic/Full-Auto Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 1959, Germany Weight: 9.7 oz Overall length: 40.2" Status: Discontinued Military use: Yes Intended use: Military