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Fabrique Nationale FN MAG

General Purpose Machine Gun (GPMG) [ 1958 ]

The Belgian FN MAG is one of the more successful post-World War 2 machine guns and is still in steady production today.

Authored By: Staff Writer | Last Edited: 08/10/2023 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The FN MAG ("Mitrailleuse d'Appui General") was developed by the Belgian concern of Fabrique Nationale as a "General Purpose Machine Gun" intended for a variety of battlefield roles - namely automatic fire support. Due to its multi-role intention, the weapon can be carried by an individual operator on patrol via shoulder strap, set up in the fire support role by way of a folding bipod, used to protect valuable positions through use of a heavy-duty tripod or mounted on vehicles in the traditional way and used for suppression of enemy forces. The weapon was designed in the 1950s under the direction of Ernest Vervier and influenced by the German World War 2-era MG42 machine gun and previous work production of the M1918 Browning Automatic Rifle (BAR). The weapon entered production in 1958 and is still ongoing today, operated by some eighty nations worldwide, making it one of the most successful post-World War 2 machine guns.

The MAG follows the distinct quality and reliability of previous FN offerings proving the weapon a multi-faceted and durable addition to any military inventory. Chambered for the widely-accepted 7.62x51mm NATO cartridge, it comes as no surprise that the system has seen equally widespread adoption by many of the NATO players. The action is of gas operation (based largely on the M1918 BAR) in which the trailing propellants of a fire shot are collected in a port tapped at the barrel and driving a piston for subsequent shots in reaching automatic fire. However, unlike the BAR, the FN MAG makes use of a downward locking bolt. The weapon fires through an open bolt arrangement and uses non-disintegrating and disintegrating ammunition belts fed through the left side of the received, the emptied belt or spent shell casings ejected through the right side. There is a large cocking handle along the lower right side of the receiver, to which the receiver is rectangular in its general shape - the knob being pulled rearwards towards the operator to initially cock the weapon. Sighting is through a rear (folding leaf with aperture/notch) and front (blade) iron assembly. A folding bipod is standard on infantry versions. The shoulder stock includes a recoil depending assembling within and the operator manages a traditional pistol grip appendage aft of a looped trigger. The trigger ring is enlarged for use with a gloved hand. The muzzle sports a slotted compensator. A carrying handle is used to facilitate transports and also to handle an overheated barrel for changing.

The FN MAG sports a running length of 50 inches with a barrel measuring 21.5 inches. Unloaded, the weapon tops the scales at 26lbs. Cyclic rate-of-fire is 650 to 1,000 rounds per minute based on setting. Muzzle velocity is rated at 2,800 feet per second. The weapon features a listed effective range out to 800 meters while, under reduced accuracy, the system can reach as far out as 1,500 meters.

There are four major FN-produced variants. The MAG 60-20 is the basic infantry support weapon featuring a fixed shoulder stock, pistol grip and folding bipod. These versions can be fitted to pintle mounts for use as door gunner weapons on helicopters. The MAG 60-30 is intended for use on aircraft was a fixed, forward-firing mount controlled via solenoid arrangement. The MAG 60-40 is an armored vehicle coaxial variant fitted to both wheeled vehicles and tracked tanks. The MAG 10-10 is a tropicalized variant given a reduced length shoulder stock and shortened barrel and gas assembly for compactness. The ammunition feed is variable on some models allowing for the belt to enter through either side of the receiver, useful in a symmetrical configuration on aircraft.©MilitaryFactory.com
The FN MAG was selected by many nations as its GPMG. One of the more notable operators, therefore, became the British Army who adopted the FN MAG under the designation of "L7". These were then procured in a plethora of variants all their own, from the base L7A1 model to the L7A2, the vehicle-mounted L8 series, the heavy-barrel L9, the remote-fire L20 series, the vehicle-mounted L37, the L43 ranging gun and the L44 of the Royal Navy. British versions were all produced locally under license, initially through the Royal Small Arms Factory at Enfield Lock and then (also currently) by Manroy Engineering.

Another of the notable military operators became the United States Army who adopted the FN MAG as the M240. It became the standard coaxial machine gun on the new line of M60 Patton Main Battle Tanks and, later, the M1 Abrams MBT. The M240B became an updated form of the original and utilized in an infantry support role as a medium machine gun beginning service in late 1995. The M240C featured a right-hand side feed while the M240D was used on helicopters through pintle mounts. The LAV operated the M240E1 series while the M240G took the place of the M60E3 GPMG for the US Marine Corps. The M240H was an improved form of the M240D model series. The M240L was a lightened version of the M240B.

The FN MAG is recognized in the Swedish Army inventory as the "Kulspruta 58" and license-produced under the Carl Gustaf brand label. Argentina locally-produces the FN MAG under license as the "7.62mm Ametralladora Tipo 60-20 MAG". These were used in anger against Britain during the 1980s Falklands War. China produces the FN MAG for export as the CQ 7.62x51. Egypt produces the FN MAG under license through the Maadi Company for Engineering Industries. France has only recently (2011) begun adoption of the MAG series. India produces the machine gun through the Ordnance Factories Board. Its neighbor, Pakistan, also makes use of the same weapon.

Many of these versions vary in subtle ways - barrel finish, grips, shoulder stocks - and are completed to suit particular operator tastes, requirements and installations. In any case, the weapon remains faithful to the original Belgian design - an excellent offering on the modern battlefield despite its 1950s origins.

Over 150,000 units have been produced worldwide and, expectedly, have seen combat service through many conflicts including the Congo Crisis (1960-1965), the Rhodesian Bush War (1964-1979), the South African Border War (1966-1990), the Namibian War of Independence (1966-1990), the Six Day War (1967), the Yom Kippur War (1973), the Falklands War (1982), the Gulf War (1991), the US-led invasion of Afghanistan (2001), the US-led invasion of Iraq (2003-2011) and during the Cambodian-Thai border troubles of 2008. See operators list for full display of national users.©MilitaryFactory.com
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Basics [+]
Fabrique Nationale Herstal SA - Belgium / FNMI - USA / Manroy Engineering - UK / Ordnance Factories Board - India / FFV-Carl Gustaf - Sweden / DGFM - Argentina / PT Pindad - Indonesia
Argentina; Australia; Austria; Bahrain; Barbados; Belgium; Belize; Bolivia; Botswana; Brazil; Brunei; Burkina Faso; Burundi; Cameroon; Canada; Chad; China; Columbia; Croatia; Cuba; Cyprus; Democratic Republic of the Congo; Djibouti; Dominican Republic; Ecuador; Egypt; Estonia; Gabon; Gambia; Ghana; Guatemala; Greece; Haiti; Honduras; India; Indonesia; Iraq; Ireland; Israel; Jamaica; Jordan; Latvia; Lithuania; Malaysia; Netherlands; New Zealand; Saudi Arabia; Singapore; South Africa; Sweden; Turkey; United Kingdom; United States National flag of Argentina National flag of Australia National flag of Austria National flag of Bahrain National flag of Belgium National flag of Bolivia National flag of Brazil National flag of Cameroon National flag of Canada National flag of Chad National flag of China National flag of Croatia National flag of Cuba National flag of Cyprus National flag of the Dominican Republic National flag of Ecuador National flag of Egypt National flag of Estonia National flag of Gabon National flag of Greece National flag of India National flag of Indonesia National flag of Iraq National flag of Ireland National flag of Israel National flag of Jordan National flag of Latvia National flag of Lithuania National flag of Malaysia National flag of the Netherlands National flag of New Zealand National flag of the Kingdom of Saudi Arabia National flag of Singapore National flag of South Africa National flag of Sweden National flag of Turkey National flag of the United Kingdom National flag of the United States
Service Year
National Origin

Capable of suppressing enemy elements at range through direct or in-direct fire.
Qualities of this weapon have shown its value to Special Forces elements requiring a versatile, reliable solution for the rigors of special assignments.

Overall Length
1,260 mm / 49.61 in
Barrel Length
630 mm / 24.80 in
Weight (Empty)
25.99 lb / 11.79 kg
Gas Operated; Open Bolt; Automatic Fire Only
System utilizes internal mechanism where bolt and associated working components are set to the rear of the receiver with no cartridge chambered; trigger actuation moves bolt forward, chambers cartridge, and fires bullet in single action - ultimately resetting during the complete cycle by way of the generated energy.
Gas-operated system is featured, typically involving a gas cylinder and rear-driven piston directing energy to the bolt component.
7.62mm x 51 NATO
*May not represent an exhuastive list; Calibers may be model-specific dependent; Always consult official manufacturer sources.
Various - Metal-link Belt Fed
Folding Leaf Rear w Aperture and Notch; Front Blade; Optional Optics

Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information.

Max.Effective Range
3,937 ft / 1,200.0 m | 1,312.3 yds
600 rpm
Muzzle Velocity
2,756 ft/sec / 840 m/sec

FN MAG - Base Series Designation.
Model 60-20 - Heavy Infantry Model.
Model 60-30 - Aircraft Mounting Model.
Model 60-40 - Co-axial Vehicle Mounting Model.
M240 - United States Designation.
C6A1 - Canadian Army designation.
L7 - United Kingdom Designation.
Ksp 58B - Swedish Production Version Designation.
GPMG / MAG 58 - Indian Designation.
SPM2 GPMG - Indonesian Production Version Designation.
CQ, 7.62x51 - Chinese Production Version Designation.
M971 - Brazilian Designation.
7.62mm MG FNMAG/Pz - Austrian Designation.
MAG 58 - Australian Designation.
7.62 Ametralladora Tipo 60-20 MAG - Argentine Designation.

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Image of the Fabrique Nationale FN MAG
Image from the United States Department of Defense imagery database.
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Image of the Fabrique Nationale FN MAG
Image from the United States Department of Defense imagery database.
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Image of the Fabrique Nationale FN MAG
Image from the United States Department of Defense imagery database.
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Image of the Fabrique Nationale FN MAG
Image from the United States Department of Defense imagery database.

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