Daewoo Precision Industries K1

The Daewoo Precision Industries K1/K1A is a South Korean submachine gun, the first modern firearm developed by Agency for Defense Development (ADD) and manufactured by Daewoo Precision Industries, and entered service in the Republic of Korea Armed Forces in 1981. Although the K1 uses .223 Remington, it is classified as a submachine gun by the South Korean military and the current manufacturer S&T Motiv, because the K1 was intended to replace the M3 submachine gun. Outside of South Korea the K1 is sometimes described as an assault rifle or as a carbine.

Daewoo Precision Industries K1
Class Manportable
Type Machine Guns
Manufacturer S&T Motiv
Origin Korea
Country Name Origin Year
Korea 1981
Country Name Operational Year Retirement Year
Bangladesh View
Korea View
Papua New Guinea View
Senegal View
ManufacturerName Production From Production To Quantity
S&T Motiv 1980 View

In 1976, the ROKA Special Warfare Command requested a new weapon to replace the old M3 submachine gun. In the following year, ADD launched a project derived from XB rifle, which started in 1972 to replace licensed M16A1s with indigenous weapons. Under the demands of the ROKASWC, the new submachine gun must acquire greater firepower, light weight, cost effectiveness, and easy access to spare parts. The first prototypes were made in 1980, and entered service in 1981 after series of field test. However, due to the design of its flash suppressor, the K1 exhibited serious problems in service with the ROK armed forces. The original version had excessive recoil, noise, flash, and weak stock due to increase in firepower. These problems caused difficulty in aiming especially during night operation.

These shortcomings were later fixed by the development and adoption of a new flash suppressor, which has three holes in the top right quadrant to limit muzzle flip under rapid fire and reduces flash to one-third of that of the early K1. This new version of K1 is known as the K1A and its production began in 1982. All K1 sumbmachine gun in service were subsequently modified to the K1A standard.

The K1A is often mated with the PVS-4K Rail integration System.

Type Submachine gun
Place of origin  Republic of Korea
Service history
In service 1981-present
Wars Persian Gulf War
War in Afghanistan
Iraq War
Production history
Designer Agency for Defense Development
Daewoo Precision Industries
Designed 1977-1982
Manufacturer Daewoo Precision Industries
S&T Daewoo
S&T Motiv
Produced 1980-present
Weight 2.87 kg (6.3 lb)
Length 838 mm (33.0 in) (stock extended)
653 mm (25.7 in) (stock retracted)
Barrel length 263 mm (10.4in)
Cartridge .223 Remington
Action Gas-operated, rotating bolt(direct impingement)
Rate of fire 700-900 rounds/min
Muzzle velocity 820 m/s (2,700 ft/s)
Effective firing range 250 m
Feed system Various STANAG magazines.
Sights Iron sights

End notes