S&T Daewoo XK8

S&T Daewoo XK8, also known as DAR-21 (Daewoo Assault Rifle-21st Century),[1] is a 5.56×45mm NATO bullpup assault rifle developed and manufactured by S&T Daewoo intended to replace Daewoo Precision Industries K2 assault rifle for the Republic of Korea Armed Forces.

Daewoo XK8/ DAR-21
XK8 rifle on display. A riflescope is mounted on the picatinny rail.
TypeBullpup assault rifle
Place of originRepublic of Korea
Production history
DesignerS&T Motiv
ManufacturerS&T Motiv
No. builtPreproduction prototypes only
Mass3.50 kg (7.7 lb) (w/o magazine)
Length780 mm
Barrel length508 mm

Cartridge5.56×45mm NATO
ActionGas-operated, Tappet type
Rate of fire850 rounds/min
Muzzle velocity940 m/s
Effective firing range600m (point target)
Feed systemVarious STANAG magazines.
SightsVarious scopes via picatinny rail

XK8 was the first firearm developed solely by the Korean defense company without the request from the military. However, after the field tests by Republic of Korea Army Special Warfare Command, it was rejected and was not mass-produced.[2]


The prototype was first developed in 2003.[3]


The XK8 was made out of polymer materials with the ejection port on the right side and the cocking lever on the left side.[3] The fire selector consists of semi-auto, three round burst and full auto.[3]

See also


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