M203 Grenade Launcher

M203 40-mm Grenade Launcher

M203 40-mm Grenade Launcher

The M203 was designed to replace the M79 grenade launcher that had been used successfully in Vietnam. It attaches below the M16A1 or M16A2. To load, the barrel release is depressed and the barrel is pushed forward, the round loaded, and the barrel pulled back to a locking position. It has its own trigger and safety.

Although the M203 has sights, you quickly get the feel of it and can accurately fire it without use of the sights. In Ranger squads, there are typically two grenadiers, one on A-team and one on B-team.

Ranger Sponsor Space
Primary Function Grenade Launcher
Manufacturer Colt Industries
Caliber 40 mm
Weight 3.0 lbs
Weight w/M16A2 11.79 lbs
Range 350 m
Sight Primary - quadrant
Secondary - leaf and post
Operation Manually Breech Loaded
Type of Fire Single
Muzzle velocity 71 m/sec
Ammunition Various cased projectiles
by Tim Davis


Ranger Sponsor Space