Daewoo Precision Industries K4

The Daewoo Precision Industries K4 (Korean: K4 고속유탄기관총; Hanja: K4 高速榴彈機關槍) is a 40×53mm high-speed automatic grenade launcher in use with the Republic of Korea Armed Forces. The K4 was developed as a complement to the K-201 hand-held grenade launcher (attachable to the K2).