The G36 replaced the G3 as the standard Bundeswehr service rifle, introducing a modern polymer receiver and optics-integrated carrying handle with integrated 3x and 1x optics. The short-stroke gas piston system is completely new, departing from the roller-delayed system of all previous HK military rifles. Adopted by Germany, Spain, and numerous other NATO nations. Type: Assault Rifle Action: Short-Stroke Gas Piston Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 1997, Germany Weight: 7.7 oz Overall length: 39.29" Status: Active Military use: Yes Intended use: Military Use, Service Rifle, Special Operations