Produced by Seil Heavy Industries of South Korea, the K6 12.7mm Heavy Machine Gun is a heavy machine gun operated by the Republic of Korea Army. It is often mounted on tanks or other armored vehicles for fire support. It operates with standard 12.7mm NATO rounds and has a maximum firing speed of 600 rounds per minute. The K1A1 MBT features a K6 machine gun on its turret. The M2 machine gun with a tripod weighs 58 kg (128 lb). ... ... The K1 (or Type 88) is a main battle tank in use with the South Korean ground forces. ...