SERVICE: Marine Corps
DESCRIPTION: Grenade launcher attachment for the M-16 rifle
The M-203 40mm Grenade Launcher is used while attached to a M-16A2 5.56mm rifle. It is a lightweight, compact, breech-loading, pump action, single shot launcher. The launcher consists of a hand guard and sight assembly with an adjustable metallic folding, short-range blade sight assembly, and an aluminum receiver assembly which houses the barrel latch, barrel stop and firing mechanism. The launcher is capable of firing a variety of low-velocity 40mm ammunition. The launcher also has a quadrant sight that may be attached to the M-16A2 carrying handle and is used for maximum effective range.
The M-203 was designed and procured as the replacement for the M-79 grenade launcher of the Vietnam War era. The final procurement of 1,825 weapons was completed in FY90. INVENTORY: 1,825
IMAGE FILE NUMBER: DF-ST-85-18159