The Daewoo K5 is a 9 mm semi-automatic pistol produced by S&T Daewoo of South Korea.[4] It is a compact, lightweight pistol with an unconventional trigger mechanism called "fast action". The frame is composed of an aluminum alloy with a matte finish, while the slide is of blued steel. K5 was produced in 1989. It is recoil operated and uses a conventional Browning-type locking system. It is mostly carried by Commissioned Officers in the Republic of Korea Armed Forces.