The Special Operations Forces Combat Assault Rifle (SCAR)[11] is a gas-operated (short-stroke gas piston) self-loading rifle with a rotating bolt and a firing rate of 625 rounds/min. It is constructed to be extremely modular, including barrel change to switch between calibres. The rifle was developed by FN Herstal (FNH) for the United States Special Operations Command (SOCOM) to satisfy the requirements of the SCAR competition. This family of rifles consist of two main types. The SCAR-L, for "light", is chambered in the 5.56×45mm NATO cartridge and the SCAR-H, for "heavy", fires 7.62×51mm NATO. Both are available in Long Barrel and Close Quarters Combat variants.
Technical Data Weight 3.04 kg (6.7 lb) (SCAR-L Short) 3.29 kg (7.3 lb) (SCAR-L Standard) 3.49 kg (7.7 lb) (SCAR-L FT) Length 787 mm (31.0 in) stock extended, 533 mm (21.0 in) stock folded (SCAR-L CQC) 889 mm (35.0 in) stock extended, 635 mm (25.0 in) stock folded (SCAR-L Standard) 990 mm (39 in) stock extended, 736 mm (29.0 in) stock folded (SCAR-L Long) Barrel length 254 mm (10.0 in) (SCAR-L Short) 355 mm (14.0 in) (SCAR-L Standard) 457 mm (18.0 in) (SCAR-L Long) Cartridge 5.56×45mm NATO (SCAR-L) Action Gas-operated (short-stroke gas piston),rotating bolt Rate of fire 625 rounds/min Muzzle velocity SCAR-L: 2,870 ft/s (870 m/s) (M855) SCAR-L: 2,630 ft/s (800 m/s) (Mk 262) Effective firing range SCAR-L: 300 m (330 yd) (Short), 500 m (550 yd) (Standard), 600 m (660 yd) (Long) Feed system SCAR-L: STANAG box magazine Sights Iron sights or various optics