These .308 chambered (DPMS style) barrels are machined from 416R Stainless Steel with a QPQ Corrosion Resistant finish. Premium Black Series Barrels are HP and MPI tested, ensuring the best in quality and accuracy.Hanson Series Barrels feature Ballistic AdvantageX'Xs proprietary BA Hanson profile and include a pinned lo-pro gas block. Hanson barrels are not designed to work with aftermarket piston kits. Mfg: Ballistic Advantage
