The K1 Rifle is a South Korean military firearm designed for infantry use. It is a gas-operated, selective-fire rifle that fires the 5.56×45mm NATO cartridge. The K1 is known for its lightweight design and versatility, making it suitable for various combat situations. Introduced in the late 1980s, the K1 Rifle has been widely used by the Republic of Korea Armed Forces. It features a folding stock, allowing for easier transport and maneuverability in tight spaces. The rifle's design is influenced by other firearms, including the M16 rifle, enhancing its reliability and performance in the field.