FN ® - The World's Most Battle-Proven Firearms.™

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FNAR™ Heavy

Available for commercial, law enforcement, and military.

The heavy-barrel version of the FNAR™ is also chambered in 7.62x51mm and features an ambidextrous magazine release and 20” cold hammer-forged MIL-SPEC fluted barrel with hard-chromed bore and target crown. A one-piece receiver-mounted MIL-STD 1913 optical rail comes standard, along with a trio of similar accessory rails attached to the adjustable synthetic stock’s fore-end for mounting a battery of tactical lights and lasers. Models with 10- or 20-round detachable steel box magazines (DBM) are available.

*Product follows USA specifications


  • Caliber: 7.62x51mm
  • Operation: Gas, rotating bolt
  • Mag Capacity: 10 or 20 Rd.
  • Barrel Length: 20"
  • Overall Length: 41.5"
  • Twist Rate: 1:12" RH
  • Length of Pull: 14"


Aircraft-grade aluminum alloy

One-piece MIL-STD-1913 optics rail


Cold hammer-forged, chrome-lined, fluted

Target crown


Synthetic pistol grip stock

Checkered gripping surfaces

Three interchangeable recoil pads

Three interchangeable comb inserts

Multiple MIL-STD-1913 mounting rails


Fully ambidextrous magazine release button

Crossbolt safety button 

Extended bolt release lever