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The Daewoo Precision Industries K1 is a South Korean carbine assault rifle, 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 5.56x45mm NATO, 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.

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 of the K1A which began production in 1982. The K1A featured a new flash suppressor with 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. All K1 submachine guns in service were subsequently modified to the K1A standard.


The K-1A AR is a weapon featured in Tom Clancy's Rainbow Six: Take-Down – Missions in Korea


Main article: K1A/Siege

"Submachine gun in a compact AR package and caliber. Offers medium-range accuracy."
— In-game description

The K1A is a submachine gun featured in Tom Clancy's Rainbow Six Siege. It was introduced in the Operation White Noise expansion and is available for use by Vigil.


The K1A1 is a submachine gun featured in Tom Clancy's Rainbow Six Extraction.