K2 assault rifle is a 5.56 mm caliber assault rifle with short stroke, air guide and optional shooting modes (full automatic and semi-automatic), with 20 or 30 magazines. Wooden hand guards, grips and foldable stock are all made of high-strength polymers. Its bolt system comes from M 16 assault rifle, but all parts of the rifle are not common with M 16. The pneumatic system comes from IMI in Israel? Galil rifle is derived (Galil's pneumatic system is derived from AK-47), which is more reliable than M 16. K2 uses the same magazine as M 16 assault rifle. The rifling is six right hands and the winding distance is 7.3 inches. K2 rifle is durable and high precision, which is very popular among North Korean soldiers. K2 rifles briefly entered the American weapons market with the stock of sports rifles in the early 1990s, but these civilian versions were not welcomed by American users because of their rough sight and rough surface treatment.