Daewoo K1

The K1 is a sub-machine-gun produced by Daewoo S&T Precision, it is chambered for the .223 Remington cartridge but can also use the 5.56×45mm NATO, though this will decrease performance slightly. It accepts standard 30-rd. STANAG magazines. Improved version is K1A.

Design
The SMG which sometimes is considered a carbine due to it's caliber, utilizes a direct-impingement system based off the AR-15. It does however not have a buffer-tube, the stock is of a wire-type like on the MP-40. Barrel length is 263mm, total length with stock extended 838mm, and empty weight is 2.87kg. Rate of fire is 700-900 RPM. Max. range is 250m. It comes with iron sights, front is of the protected corn-type, while rear sight is of the ring-type. There is a top-rail kit for the K1, along with a RAS kit, it has a top and bottom rail, and can accept short and full-length rails on both sides.

Use
The K1 has been used by the ROK Army, Air-Force, Navy, Marine-Corps, Coast Guard and National Police SWAT units. It is usually issued to vehicle-crews, IFV and APC transported personnel, paratroopers, ship-boarding units, special-forces, helicopter-crews and others. Special forces such as the 707th Special Missions Battalion and the UDT SEALS receive RAS-kits.

It was used by ROK-Army soldiers in Iraq and is still used in Afghanistan.

It has also been adopted by the armed-forces of Bangladesh, Brazil, Cambodia, Fiji, Indonesia, Nigeria, Philippines and Senegal.