This .300 Blackout chambered 10.3 inch Performance Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. Our Performance Series Barrels feature a Nickel Boron Coated M4 Feed Ramp Extension and are HP and MPI tested. Hanson Series Barrels feature our proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits. Length: 10.3" Material: 4150 Chrome Moly Vanadium Profile: Hanson Finish: QPQ Corrosion Resistant Twist Rate: 1/7" 5R Gas System Length: Pistol Gas Block Journal: 1.03a ^2 Gas Block Seat for .750&Pr Mfg: Ballistic Advantage
