General Purpose Machine Gun
The General Purpose Machine Gun (GPMG) can be used either as a light weapon, mounted on a bipod, or it can be used in a sustained fire role, mounted on a tripod and fitted with the C2 optical sight. In this role it is operated by a two-man team, grouped in a specialist machine gun platoon to provide battalion-level fire support. Versions of the GPMG are mounted on most army vehicles and some helicopters.
It is a little known fact that SF crews are selected after careful consideration of their medical records, and in particular X-Rays of their nappas, which must be thick enough to withstand tripod 'grazing' whilst getting amongst a bit of man-portability.
The main GPMGs in the British Forces is the L7/L8 series. See L7A1