The G36 is a 5.56×45mm assault rifle, designed in the early 1990s by Heckler & Koch (H&K) in Germany as a replacement for the heavier 7.62mm G3 battle rifle. It was accepted into service with the Bundeswehr in 1995, replacing the G3. The G36 is gas-operated and feeds from a 30-round detachable box magazine or 100-round C-Mag drum magazine.