The G-36 is the replacement for the G3 in the German military. The G-36 fires the 5.56mm NATO round, which is exactly what the M16/M4 carbine fires. The G36 is highly accurate, very lightweight, and can be made into a number of variants, including a squad support weapon, close-quarters combat, and the standard assault rifle. The G36 is probably one of the best western guns in the world.