SMALL ARMS SYSTEM
ACTIVE
BATTLE TESTED 85%
K4 Automatic Grenade Launcher
K4
MANUFACTURER Dasan Machine
IN SERVICE 1992
OVERVIEW
The K4 is a crew-served 40mm automatic grenade launcher used by the ROK military for area suppression and anti-personnel roles. Fires 40×53mm high-velocity grenades at a sustained rate, mounted on tripods, vehicles, and naval vessels. Korean equivalent to the Mk 19.
TECHNICAL SPECIFICATIONS
caliber
40×53mm NATO (high velocity)
action
Blowback, open bolt
rate of fire rpm
325-375
muzzle velocity ms
240
effective range m
1500
max range m
2200
weight kg
35.3
feed
Belt-fed
mount
Tripod, vehicle, or naval mount
BATTLE TESTED REVIEWS
85
Korean Coastal Defense Devastating Area Suppression
2010 | ROK Navy Coastal Command
The K4 automatic grenade launcher is deployed on ROK Navy patrol boats, ground vehicles, and fixed coastal defense positions. During the heightened readiness following the 2010 Yeonpyeong shelling and Cheonan sinking, K4-equipped positions along the NLL (Northern Limit Line) were manned continuously. The 40mm high-velocity grenades provide devastating area effect against personnel and light vehicles.
Deployed on naval patrol boats along NLL
Manned during 2010 Yeonpyeong/Cheonan crisis
Area suppression capability covers 1,500m effective range
Vehicle and naval mount versatility provides flexible deployment