page_title: FN MAG
section_title: Features
hierarchical_section_title: FN MAG / Design details / Features
caption_attribution_description: English: A schematic showing the mechanism of the FN-MAG general purpose machine gun.
context_page_description: The FN MAG is a Belgian 7.62 mm general-purpose machine gun, designed in the early 1950s at Fabrique Nationale by Ernest Vervier. It has been used by more than 80 countries and it has been made under licence in several countries, including Argentina, Canada, Egypt, India and the United Kingdom.
  The weapon's name is an abbreviation for Mitrailleuse d'Appui Général, meaning "general support machine gun". The MAG is available in three primary versions: the standard, infantry Model 60-20 machine gun, the Model 60-40 coaxial machine gun for armoured fighting vehicles and the Model 60-30 aircraft variant.
context_section_description: The weapon feeds from the left side from open-link, metal ammunition belts: either the American disintegrating M13 belt (NATO standard) or the non-disintegrating segmented German DM1 belt, whose 50-round sections can be linked through a cartridge. In order to adapt the weapon to feed from one belt type to the other, several components of the feed mechanism need to be reconfigured since the position of the feed tray's cartridge stop and pawl angles in the top cover are different. The MAG features a pawl-type feeding mechanism that continues to move the feed link during both the rearward and forward cycles of the reciprocating bolt carrier, producing a smooth belt flow. The feeding mechanism's three pawls are actuated by a roller connected to the bolt carrier. The feed channel rail, feed link, both feed slides and the feed tray are chrome plated. The top cover body is an anodized aluminum casting. In the infantry assault role, the weapon can be fitted with a sheet metal container that houses a 50-round belt and is attached to the left side of the receiver.
  The quick-change barrel has a slotted flash suppressor. The barrel's chamber and bore are chromium-lined and the barrel has four right-hand grooves with a 305 mm (1:12 in) rifling twist rate. Also attached to the barrel is the front sight base, carry handle and gas block (equipped with an exhaust-type gas regulator valve with three settings). The barrel assembly weighs 3,050 g (6.72 lb) and of the 630 mm (24.80 in) long barrel a portion of 487.5 mm (19.19 in) is rifled. The MAG takes zero shifts between barrel assemblies into account by making the front sight of the assemblies adjustable with the help of tools.
  The machine gun is fitted with a folding bipod (attached to the end of the gas cylinder) that can be adjusted for height. For carrying or use as a forearm, the aluminum legs can be folded back and secured in slots under the receiver by hooks and a spring-loaded catch. When firing from the hip, the bipod legs remain extended and the left leg is gripped for support. The bipod can be removed from the gas cylinder by tapping-out a roll pin in the gas cylinder head until it is flush and the bipod can be rotated enough to clear the gas cylinder's retaining lugs.
  The MAG is also equipped with a fixed wooden stock, pistol grip, carrying handle and iron sights that consist of a forward blade (adjustable mechanically for both windage and elevation) and a folding leaf rear sight with an aperture in the down position for firing distances from 200 to 800 m (219 to 875 yd) in 100 m (109 yd) increments and an open U-notch for ranges from 800 to 1,800 m (875 to 1,969 yd) graduated every 100 m (109 yd). The rear sight is hinged to a base with protective ears that is integral with the receiver's upper forging. The iron sight line has a 848 mm (33.4 in) sight radius.
  The MAG's receiver is constructed from sheet metal stampings reinforced by steel plates and rivets. The front is reinforced to accept the barrel nut and gas cylinder which are permanently mounted. Guide rails that support the bolt assembly and piston extension during their reciprocating movement are riveted to the side plates. The bolt's guide rails are shaped downward to drive the locking lever into engagement with the locking shoulder, which is also riveted to the side plates. The rear of the receiver has been reinforced and slotted to accept the butt-stock.
  In the static machine gun role, the weapon is mounted on a tripod that offers a higher degree of accuracy and control than the bipod, for example the FN 360° tripod, which features an elevation adjustment mechanism that enables the weapon's bore axis to be maintained from 300 mm (11.8 in) to 600 mm (23.6 in), has a 30° to +15° elevation change and a 360° traverse range. When used in the anti aircraft role, the machine gun can increase the cyclic rate of fire from 650 up to 1,000 rpm by regulating a user adjustable gas valve.
caption: A schematic showing the mechanism of the FN MAG.
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