Ballistic Adv BABL556018F AR Barrel Performance 5.56x45mm NATO 17.70 AR-15 4150 Chrome Moly Vanadium Steel Black QPQ Heavy Profile BA Hanson Midlength

Ballisttic's Performance Series barrel is machined from 4150 chrome moly vanadium steel with a QPQ vorrosion resistant Finish. It features a nickel boron coated extended M4 feed ramp extension.The Hanson Series barrel features a proprietary BA Hanson profile and include a pinned lo-pro gas block. This 17.7 barrel is chambered in 5.56 NATO, has a mid-length gas system and 1/2x28 tpi threads.NOTE: Hanson barrels are not designed to work with aftermarket piston kits.