The rifle magazine functions as a hand grip when firing the M203. The device attaches under the barrel, the launcher trigger being in the rear of the launcher, just forward of the rifle magazine.
Stand-alone variants of the M203 exist, as do versions designed specifically for many other rifles. The launcher can also be mounted onto a C7, a Canadian version of the M16 rifle however, this requires the prior removal of the bottom handguard. Quite versatile and compatible with many rifle models, the M203 was originally designed for the U.S. It uses the same rounds as the older stand-alone M79 break-action grenade launcher, which utilizes the High-Low Propulsion System to keep recoil forces low.
The M203 is a single-shot 40mm under-barrel grenade launcher designed to attach to a rifle. 382 yds (350 m) Fire-team sized area target 164 yds (150 m) Vehicle or weapon point target
