The FN SCAR barrel assemblies are cold hammer-forged, chrome-lined MIL-SPEC steel barrels with front sight assembly, gas block assembly, gas regulator, gas piston and flash hider installed. Available in short lengths for reduced weight, fast handling and confined space maneuvering. Assemblies can be easily installed by the user with a Torx T25 and 62 In Lb torque wrench and are ready to shoot without headspacing. Cold hammer-forged, chrome-lined MIL-SPEC steel. All NFA Rules Apply. Mfg: Fn America