Daewoo K11 The Daewoo K11 is a South Korean assault rifle / grenade launcher , the Daewoo K11 shares some similarity with the American XM - 29 OICW and the XM - 25 . Description . The K11 dual - caliber air - burst weapon was first shown to public in 2009 , during DSEI military expo , although information on its development was available since about 2006 . The K11 ( XK11 during early development ) weapon is being developed under direction of the Agency for Defense Development of the Republic of Korea . The K11 shows more than passing similarity to the ill - fated American XM - 29 OICW weapon , but it appears that K11 has better chances to see the service - it is believed that first unit of South Korean army could receive the K11 weapons in 2010 . This is not surprising , considering the fact that Republic of Korea is among world ' s leading countries in the field of design and production of advanced micro - electronics , and also has an established defense industry and strong motivation for constant upgrade of military equipment . As of now , the K11 dual - caliber air - burst weapon is proposed for infantry squad support role , multiplying soldiers capabilities to engage enemy personnel in defilade and soft - skinned vehicles and equipment , using 20mm air - burst grenades with pre - programmed fuse and 5 . 56mm ammunition for short - to medium range direct fire . K11 dual - caliber air - burst weapon consists of three major units , linked into one weapon . Those are 20mm multi - shot grenade launcher ( which serves as a bone to the system ) , the 5 . 56mm automatic rifle with firing controls , and an electronic fire control unit . The grenade launcher is a manually operated , bolt action weapon that is fed from detachable box magazines . It is built in bullpup layout , with aluminum alloy receiver and titanium alloy barrel . The trigger system of the grenade launcher is mechanically linked to the trigger / selector / safety unit of the integral rifle component . The rifle component is more or less conventional , gas operated , rotary bolt selective - fire weapon which uses M16 - type magazines . Its layout is more or less similar to US - made Colt M16 or Korean - made Daewoo K2 rifles . The trigger unit is a common part between grenade launcher and rifle components , with single safety / fire selector lever providing fire from grenade launcher ( single shots ) or rifle ( single shots or 3 - round bursts ) . The third component is an electronic fire control unit , which includes laser rangefinder , environmental sensors , ballistic computer , and day ( optical ) and night ( IR ) sighting channels . The ballistic computer output is fed to the electronic aiming reticle ( providing visible point of aim pre - set for proper range ) and to the fuse - programming unit in the grenade launcher , which sets the 20mm grenade to explode at specified range , above or to the side of the target , to provide maximum kill effect from explosive fragmenting warhead . At the present time , two types of 20mm ammunition are specified for K11 grenade launcher - the Daewoo K167 HE air - burst grenade and Daewoo K168 TP target practice grenade . Rifle component can use any NATO - standard 5 . 56mm ammunition .