Systema Engineering is a Japanese manufacturer of airsoft internal parts, and airsoft gun replicas of real firearms for use as a safe, low cost substitute in simulated live fire training. Primarily the company manufactures internal upgrade parts and kits for airsoft guns. In the late-2000s, Systema began manufacturing high-quality airsoft guns. The Systema airsoft guns are now used by the military in combat training by its realism and durability. These guns come in 3 burst and full auto.