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ArmaLite AR-10

Battle Rifle [ 1958 ]

Nearly 10,000 of the AR-10 Battle Rifles were produced by a variety of manufacturers since the late-1950s.

Authored By: Staff Writer | Last Edited: 09/28/2016 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

In 1953 the nations of NATO agreed upon common cartridges like the 7.62x51mm for its rifles so there began a notable increase in guns developed to fill the role of "Battle Rifle" - automatic, self-loading systems chambered to fire full-powered rifle-caliber cartridges. Prolific American arms designer Eugene Stoner worked on what became the ArmaLite "AR-10" during the latter half of the 1950s and, seeing introduction in 1960, the rifle managed to see only modest sales and adoption before falling under the weight of competing types.

On the whole, the design was well-thought out and incorporated a "straight-line" barrel-and-stock arrangement for improved full-automatic fire controllability. Additionally, metallic components were completed in aluminum and critical parts were chromium-lined for long-term reliability. All this worked to produce a lightweight rifle and its action was based on the now-proven AR-15/M16 rifle family. Indeed the M16 is a dimensionally smaller form of the AR-10 and fires the 5.56x45mm NATO cartridge instead. A muzzle compensator had to be fitted to AR-10 rifles due to the muzzle climb inherent in the lightweight design when firing the full-power 7.62x51mm NATO round on full-automatic.

Despite these qualities, the design arrived too late in the marketplace. Prototypes were had as early as 1955 but serial production ended as soon as 1961 with fewer than 10,000 units completed under the Fairchild ArmaLite brand label. Additional examples stemmed from Colt's Manufacturing Company and Artillerie Inrichtingen before the end but legacy production has continued to deliver additional samples to the world.

The AR-10 was also the basis of a series of prototype designs including the AR-10 LMG, a proposed Light Machine Gun form but only serving at the developmental level and nothing more.

The AR-10 series went on to find a home in the inventories (some police, some militay) of Brazil, Burma, Canada, Cuba, Finland, Germany (West Germany), Guatemala, Italy, Nicaragua, Portugal, Romania and Sudan. Conflicts featuring the rifle included the Vietnam War (1955-1975), the Portuguese Colonial War (1961-1974), the Angolan Independence War (1961-1974), the Mozambican War of Independence (1964-1974), the Sudanese Civil War (1955-1972) and the Portuguese Timor Conflict (1975-1976).©MilitaryFactory.com
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Service Year

United States national flag graphic
United States


Battle Rifle

ArmaLite (Fairchild) / Colt's Manufacturing Company - USA
(View other Arms-Related Manufacturers)
National flag of Brazil National flag of Canada National flag of Cuba National flag of Finland National flag of modern Germany National flag of Italy National flag of Nicaragua National flag of Portugal National flag of Romania National flag of Sudan Brazil; Burma; Canada; Cuba; Finland; Guatemala; Italy; Nicaragua; Portugal; Romania; Sudan; West Germany
(OPERATORS list includes past, present, and future operators when applicable)
Automatic Function
Features a mechanical function to automate the firing action.

Overall Length
1,050 mm
41.34 in
Barrel Length
528 mm
20.79 in
Empty Wgt
8.82 lb
4.00 kg

Aperture Rear; Fixed Front Post


Gas-Operated; Rotating Bolt

Rotating Bolt
System utilizes internal mechanism to lock the breech or rear barrel assembly prior to firing.
Gas-operated system is featured, typically involving a gas cylinder and rear-driven piston directing energy to the bolt component.
(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)


7.62x51mm NATO; .308 Winchester (model dependent)

Sample Visuals**

Graphical image of a 7.62x51mm / .308 Winchester rifle cartridge
Rounds / Feed

20-round detachable box magazine
Cartridge relative size chart
*May not represent an exhuastive list; calibers are model-specific dependent, always consult official manufacturer sources.
**Graphics not to actual size; not all cartridges may be represented visually; graphics intended for general reference only.
Max Eff.Range
1,970 ft
(600 m | 657 yd)
Muzzle Velocity
2,700 ft/sec
(823 m/sec)

AR-10 - Base Series Designation
AR-10 LMG - Experimental light machine gun model

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