The Daewoo Precision Industries K4 is a 40x53mm high-speed Automatic Grenade Launcher in use with the Republic of Korea Armed Forces. It is very similar to the American Mk 19 grenade launcher. It was developed as a complement to the K-201 hand-held grenade launcher (attachable to the K2). It has a weight of 65.9 kg and can fire up to 325 rounds per minute with a firing range of 1.5 km.