FN America SCAR 308 Win Barrel Assembly. Cold hammer-forged, chrome-lined MIL-SPEC steel barrel with front sight assembly, gas block assembly, gas regulator, gas piston and flash hider installed. Short length for reduced weight and fast handling. Install with Torx T25 and 62 in-lb torque wrench; headspacing not required. Chrome-lined MIL-SPEC steel.