The S&T Daewoo K11 DAW is a multi-weapon resembling the earlier US Objective Individual Combat Weapon in concept, design and operation. It consists of two separate weapons combined into a single unit: a lower assault rifle chambered to fire 5.56×45mm NATO rounds and an upper 20×30mm grenade launcher firing both conventional and air-bursting "smart" grenades, along with its integrated digital sighting unit.
The S&T Daewoo K11
The XK11 rifle with 20mm HEAB and 5.56mm KE
A grenade launcher is a weapon that fires a specially designed, large-caliber projectile, often with an explosive, smoke, or gas warhead. Today, the term generally refers to a class of dedicated firearms firing unitary grenade cartridges. The most common type are man-portable, shoulder-fired weapons issued to individuals, although larger crew-served launchers are issued at higher levels of organization by military forces.
Milkor MGL revolver-style grenade launcher
A United States Army Special Forces advisor instructing a Vietnamese Civilian Irregular Defense Group trainee on how to use an M79 grenade launcher
French grenade launchers from 1747
French soldiers with a Sauterelle, c. 1915