The 7.5 mm Maschinengewehr 1951 or Mg 51 is a general-purpose machine gun manufactured by W+F of Switzerland. The weapon was introduced into Swiss service when the Swiss Army initiated a competition for a new service machine gun to replace the MG 11 heavy machine gun and the Furrer M25 light machine gun adopted in 1911 and 1925 respectively.
Swiss presentation of the MG51
Mg 51 on a tripod with accessories. Notice the tubular (spare) barrel protector used as a field accessory.
Mg 51 on a Flab anti-aircraft mount
MOWAG Eagle III armed with a remote weapon station mounted Pz Mg 51/71
General-purpose machine gun
A general-purpose machine gun (GPMG) is an air-cooled, usually belt-fed machine gun that can be adapted flexibly to various tactical roles for light and medium machine guns. A GPMG typically features a quick-change barrel design calibered for various fully powered cartridges such as the 7.62×51mm NATO, 7.62×54mmR, 7.5×54mm French, 7.5×55mm Swiss and 7.92×57mm Mauser, and be configured for mounting to different stabilizing platforms from bipods and tripods to vehicles, aircraft, boats and fortifications, usually as an infantry support weapon or squad automatic weapon.
The MG-42 type general-purpose machine guns in both bipod and tripod configurations. The tall tripod on the right is for anti-aircraft use.
MG 34 belt-fed tripod version (top) and saddle-drum magazine bipod version (below)
MG 42/59
MG3
