40mm Grenade Machine Gun (GMG)

The Heckler & Koch 40mm Grenade Machine Gun (GMG) provides unrivalled infantry suppression combining the best characteristics of the heavy machine guns or light mortars usually employed in this role.

Conventional rifle ammunition provides no fragmentation effect and is largely not effective enough against advancing armoured infantry fighting vehicles and battle tanks. On the other hand, mortars have the disadvantage of a relatively low rate of fire. The GMG combines the advantages of both of these two types of weapons delivering high flexibility and firepower combined with the fragmentation effect of mortar ammunition.

The GMG is usually mounted on WMIK (weapons mount installation kit) Land Rovers but can also be used from ground-based tripods.


Rate of fire:340 rounds per minute

Range:1.5 km for point targets, 2km for area cover

Ammunition: 40 mm high velocity and high explosive grenades

Courtesy of MoD.


Read More


Make a donation to Airborne Assault ParaData to help preserve the history of The Parachute Regiment and Airborne Forces