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M203 grenade launcher

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M203 Grenade Launcher IFS

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LMT M203 40 mm Grenade Launcher Practice

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Marine Corps Weapons: M203 Grenade Launcher

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For a Limited Time, You Can Get Your Own Colt M203 Grenade Launcher

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How to shoot a M4 with M203 Grenade Launcher | Field Test | Tactical Rifleman

The M203 is a single-shot 40 mm under-barrel grenade launcher designed to attach to a rifle. 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. Quite versatile and compatible with many rifle models, the M203 was originally designed for the U.S. M16 and its variant, the M4 Carbine. 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.