Ballistic Advantage Premium Series 6.5 Creedmoor AR Rifle Barrel. These AR15 Barrels by Ballistic Advantage boast a shoulder-less design that symmetrically limits barrel whip and allows the barrel to quickly return to its home position. In doing so it is much easier to land follow-up shots with a high rate of fire. Another fantastic feature of the Ballistic Advantage Hanson Series AR Barrel is that it has a QPQ corrosion-resistant finish which will preserve the quality of your barrel and rifle for significantly longer than stock options. Upgrade your firearm with the Ballistic Advantage Premium Series QPQ Coated Rifle Barrel today to experience the power of premium. Specifications for Ballistic Advantage BABL308009P 308 Barrel SS 18in Hanson: Material: 416R Stainless Steel Profile: Hanson Finish: Bead Blasted Gas System Length: Mid-length Gas Block Journal: .875in. Twist Rate: 1 Muzzle: 5/8x24 Threaded Weight: 57oz. Package Contents: Ballistic Advantage BABL308009P 308 Barrel SS 18in Hanson Ballistic Advantage BABL65CR02P: Mid .875 Premium Series 6.5 Creedmoor AR Barrel Gray 20 in