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FN MAG / M240 vs M240B
Side-by-side technical comparison
FN MAG / M240
Other WeaponsIn production
M240B
Other WeaponsIn production
Overview
Spec
FN MAG / M240
M240B
Production
1958–present
1995–present
Units produced
Over 200,000
Over 80,000
Specifications
Spec
FN MAG / M240
M240B
Overall length
1,263mm (49.7 in)
1245 mm
Barrel length
630mm (24.8 in) standard
629 mm (24.8 inch)
Weight
12.5 kg (27.6 lb) M240B with bipod
12.3 kg
Magazine capacity
M13 disintegrating link belt, typically 50 or 100 rounds
Belt fed (100 or 200 round belts)
Action type
Gas-operated, open bolt
Gas-operated, locking shoulder
Trigger type
Full auto only
Full auto only
Sights
Adjustable iron sights, Picatinny rail for optics
Adjustable rear aperture, front blade
Calibers
FN MAG / M240
M240B