General-purpose machine gun
||This article is incomplete. This is because does not cover general development, date of use, non-military use etc. (July 2011)|
A general-purpose machine gun (GPMG) is an air-cooled, belt-fed weapon with a quick change barrel that can be used in a variety of roles, from bipod- or tripod-mounted infantry support, to deployment as a helicopter door gun, or a vehicle-mounted support weapon. Modern GPMGs fire full-power rifle cartridges such as the 7.62×51mm NATO, 7.62×54mmR, 7.92x57mm Mauser, etc.
"With the MG 34, the German Wehrmacht introduced an entirely new concept in automatic firepower - the general-purpose machine gun (GPMG). In itself the MG 34 was an excellent weapon: an air-cooled, recoil-operated machine gun that could run through belts of 7.92mm ammunition at a rate of 850 rounds per minute, delivering killing firepower at ranges of more than 1,000 meters. Yet simply by changing its mount and feed mechanism, the operator could radically transform its function. On its standard bipod it was a light machine gun, ideal for infantry assaults; on a tripod it could serve as a sustained-fire medium machine gun; aircraft or vehicular mounts turned it into an air defence weapon; and it also served as the coaxial machine gun on numerous tanks.
During World War II, the MG 34 was superseded (although it remained in combat use) by a new GPMG - the MG 42. The MG 42 was more efficient to manufacture and more robust, and had a blistering 1,200-RPM rate of fire. Nicknamed 'Hitler's buzzsaw' by Allied troops, it was arguably the finest all-round GPMG ever produced, and alongside the MG 34 it inflicted heavy casualties on Allied soldiers on all European and North African fronts. Such were its qualities of firepower and usability that it became the foundation of an entire series of postwar machine guns, including the MG 1 and MG 3 - the latter is still in production and service to this day."
Notable post-WWII examples
- German MG3, a direct descendant of the MG42, is still in service with the German Army and others.
- Belgian FN MAG, which copied the MG42's feed-system and trigger-mechanism. It is the most widely used GPMG among western armies.
- American M60, which uses the MG42's feed-system and stamp-steel construction. It has been replaced in U.S. service by the M240 itself an FN MAG variant.
- French AA-52, which more or less copies the MG42 feed-system. It has been largely phased out in favour of the FN MAG and FN Minimi.
- Russian PK/PKM family of multi-purpose machine-guns, widely exported.
- People's Republic of China, the Type 67 and later improved models.
- German Heckler & Koch HK21, based on the Heckler & Koch G3 rifle and widely exported
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