Country of origin
5.56 x 45 mm
Weight (with sight and batteries but without
Barrel length (grenade launcher)
Muzzle velocity (grenade launcher)
Cyclic rate of fire
650 - 950 rpm
Practical rate of fire
40 - 100 rpm
Practical rate of fire (grenade launcher)
Magazine capacity (grenade launcher)
~ 5 rounds
Range of effective fire
Range of effective fire (grenade)
~ 800 m
The K11 is
an unusual dual-barrel weapon with a distinctive appearance. It was
developed in South Korea. The K11 was inspired by
OICW, which was eventually cancelled. The South Koreans are
known to reverse engineer US prototype weapons. The K11 integrates both
5.56 mm assault rifle and 20 mm grenade launcher into a single
weapon. Furthermore it has a fire control system. The South Korean
K11 was slightly more successful than its US counterpart. It was
adopted by the South Korean army in 2010 and is currently used in
small numbers. Overall it is more advanced than the American XM29
OICW. The K11 was the first production weapon of its kind. However this South Korean
weapon reportedly remains problematic and unreliable.
integrates a modified
assault rifle, which is rather conventional in design. This weapon
has a shorter barrel. It is a gas-operated weapon, chambered for a
standard NATO 5.56x45 mm ammunition.
integrated grenade launcher has
a bullpup layout. It is located over the rifle component. It is a
single-shot, bolt-action weapon. Grenade launcher of the American
XM29 OICW could load grenades automatically after each shot. However
South Koreans eliminated this feature in order to save weight.
Korean weapon fires specially designed "smart" grenades. The 20 mm
programmable grenades, are electronically set to explode for
airburst at predefined ranges. Theses are effective against area
targets, such as hostile troops hidden behind cover, in the
vegetation or in the trenches. The grenades can be also set to
engage point targets, such as unarmored and
lightly armored vehicles. A standard fragmentation grenade weights
around 85 g and has a killing radius of around 7 meters.
rifle is fed from 30-round capacity magazines. These are standard
magazines of the
K2 assault rifles that are widely used by
the South Korean military. This weapon is compatible with all
standard NATO (M16-type)
launcher is a magazine-fed weapon. However after each shot the
shooter has to reload it manually. Its magazine is made of
transparent plastic, so the shooter can easily see how many grenades
are left in the magazine.
This weapon fires both
5.56 mm and 20 mm ammunition with single trigger. A fire mode
selector for the assault rifle and grenade launcher is located over the pistol grip and
is conveniently operated by a thumb. It has positions for
"semi-auto", "3-round burst", and "airburst".
uses a large boxy electronic sight, which is used to aim both the
assault rifle and grenade launcher. The sight has a built-in laser
rangefinder, ballistic computer and grenade programming interface.
It is used to pre-set electronic fuses of 20 mm grenades for
airburst at predefined ranges. Such computerized fire control system
allows the shooter to accurately target the grenades. Furthermore
the sighting unit incorporates both day and night sights. The night
sight has got an infrared sensor. Control buttons
of the sight are located on
the foregrip. The sight can be completely removed from the weapon.
effective fire is 500 meters with 5.56 mm ammunition.
Maximum effective range of 20 mm grenades against stationary targets is
around 800 m.
of this assault rifle can be used to snap or to shoot-through the
K11 has little advantages over a standard South Korean K2 assault
rifle, fitted with a detachable 40 mm underbarrel grenade launcher.
Its small and light 20 mm grenades are too week. They contain large
quantities of sensors and circuitry, so very little of their mass is
in their bursting charges. Compared to 40 mm grenades, the 20 mm
grenade has 1/4 of their explosive filler. Also the K11 is a heavy
and bulky weapon. For an average soldier it is uncomfortable to
carry it and to use it in a combat situation. Furthermore it is much
more expensive to produce than a standard K2 assault rifle with a
grenade launcher and a telescopic sight.
developed a similar weapon for its future soldier program, which integrates both assault rifle and
grenade launcher. It is called the
This weapon was adopted in around 2016 and is in service with China.
However it is unknown how many of these
weapons were produced. It is generally similar to the K11, but is
chambered for Chinese 5.8x42 mm ammunition and has a single shot
grenade launcher without magazine. After each shot the shooter has
to reload it manually.
North Korean assault rifle with integrated grenade launcher
appeared. It was first publicly revealed in 2017 during a military
parade. It is modeled after the K11 and has many similar features,
including a magazine-fed single shot grenade launcher. It is
chambered for 5.45x39 mm ammunition.