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FN® M240B

Available for law enforcement and military.

The FN® M240 (also known as the FN MAG® or FN MAG® 58) family of medium machine guns (7.62x51mm NATO) has long been employed by all services of the U.S. Armed Forces. The FN® M240B is the “go to/can do” medium machine gun for all branches of the U.S. military, offering absolute reliability, extended range, and an exceptional service life.

This weapon’s high volume of fire makes it the principal suppressive fire instrument for the infantry platoon and company. The M240 is one of the most essential and widely used small arms in Iraq and Afghanistan.

The M240 B’s cold hammer-forged MIL-SPEC barrel has a hard-chromed bore for longer life and improved accuracy. The receiver is machined steel and is equipped with a top-mounted MIL-STD-1913 optical rail. The crossbolt safety and curved trigger help enhance operator control. All M240Bs include one spare barrel.

LE & Military pricing on request.

*Product follows USA specifications
*Military products available to U.S. sales only


  • Caliber: 7.62x51mm NATO
  • Operation: Open-bolt
  • Barrel Length: 21.7″
  • Overall Length: 48.5″
  • Height: 11.6″
  • Rate of Fire: 550 - 650 RPM

Product Features


Quick change barrel

Machined steel receiver

Composite polymer trigger grip

Lightweight 5.8 lbs. barrel

Machined steel front sight

Single-port gas regulator

Matte black non-reflective finish on all surfaces

Adjustable steel bipod on all M240B models


Solid steel frame on M240B


Fires from the open bolt position to reduce heat buildup and potential for chambered round cook-off

Multiple integrated MIL-STD-1913 mounting rails for optics, lights and laser devices


Cold hammer-forged steel

Fixed headspace and timing

Air-cooled design


Highly ergonomic polymer buttstock assembly with hydraulic recoil buffer system and non-slip buttplate for added operator control


Crossbolt safety button for easy operator access

Curved trigger for improve finger position and control in rapid fire

Offset charging handle for easy access and operation


NATO standard disintegrating link belt-fed


600m effective range, grazing fire

800m effective range, point target

900m effective range, tracer burnout

1,800m effective range, area target

3,725m maximum range