Heckler & Koch MG5 MG5 | Universal Machine Gun. Modular. Reliable. Superior. As the successor of the MG3, the MG5 opens a new era of universal belt fed 7.62 mm x 51 machine guns. Compared to others, the gas operated MG5 offers an intelligent and contemporary build standard, with numerous technical and ergonomic innovations. The mounting interface of the MG5 is compatible with MG3 mounts and tripods already in service. The universal MG5 can be used by dismounted infantry in the ground role, as well as for air defence or as a vehicle mounted/co axial machine gun.