S&T Daewoo K11

The S&T Daewoo K11 DAW (Dual-barrel Air-burst Weapon) is an assault rifle chambered to fire 5.56×45mm NATO rounds, as well as 20×30mm air-burst smart grenade from its overbarrel launcher. Two conventional 20 mm shells either detonate immediately on impact or on a timed fuse after impact. A third type of shell is controlled by the weapon's integrated electronics to explode a few meters from the target, yielding an air burst effect capable of killing targets within a 6 m area and seriously wounding those within an 8 m area. Users enter a range at which the shell is to detonate, allowing targets in ditches, in buildings, or behind walls to be destroyed without requiring the shell to strike the target.

In May 2010, the United Arab Emirates purchased a quantity of 40 K11s for evaluation purposes for a total cost of US$560,000, giving an indicative unit cost of US$14,000.

S&T Daewoo K11
Class Manportable
Type Rifles
Manufacturer S&T Motiv
Origin Korea
Country Name Origin Year
Korea 2010
Country Name Operational Year Retirement Year
Korea 2010 View
ManufacturerName Production From Production To Quantity
S&T Motiv 2010 View

The K11 was officially unveiled to the public at the DSEI military expo, though information pertaining to its development has been available since 2006.

The weapon was adopted by the Republic of Korea Armed Forces in 2008 and was distributed within the Republic of Korea Army during 2010, making it the world's first army to use an airburst rifle as standard issue in the military. Each squad is reported to be issued two K11s, though it will not replace grenadiers who currently use K2 rifles with the underslung K201 grenade launcher.

In March 2011 it was announced that 15 out of 39 K11s issued since June 2010 (including 7 out of 20 rifles used by Korean forces in Afghanistan) had shown serious defects and the decision had been made to halt production and modify the design. The defects included: barrel movements during firing, defects in the striking mechanism, condensation forming inside the laser reception lens, and defects in switching from single to automatic fire. South Korea's state procurement agency, The Defense Acquisition Program Administration (DAPA) said it has fixed the defects by modifying the designs and improving the shooting control system and will resume its production.

A total of 4,000 K11s were to be produced with all to be fielded by 2014.

In September 2014, a major defect was found in the fire control system of the K11, which suspended production as well as use of the 900 rifles distributed to the Army. The Agency for Defense Development says a solution will be implemented on a large scale before the end of 2016.

The S&T Daewoo K11 has been used in the following conflicts:

  • War in Afghanistan

Type Bullpup Dual-barrel air-burst weapon
Place of origin Republic of Korea
Service history
In service 2010–present
Wars See Conflicts
Production history
Designer Agency for Defense Development
S&T Motiv
EO System
Hansung ILS
Designed 2000-2008
Manufacturer S&T Motiv
Unit cost US$14,000
Produced 2010-present
Weight 6.1 kg (13.45 lb) empty
Length 860 mm (33.86 in)
Barrel length 310 mm (12 in) (KE)
405 mm (15.9 in) (HE)
Caliber 5.56×45 mm NATO (KE)
20×30 mm grenade (HE)
Action Gas-operated, rotating bolt(rifle section)
Bolt action (launcher section)
Rate of fire 700 RPM (KE)
Muzzle velocity 960 m/s (3,100 ft/s) (KE)
200 m/s (660 ft/s) (HE)
Effective firing range 300 m (KE)
500 m (HE)
Feed system STANAG Magazines (KE)
5-round detachable box magazine (HE)
Sights Ballistics computer, day (Optical)/night (Thermal vision) vision sight

End notes