Ballistic Advantage Premium Series, Barrel, 308 Winchester, 16, Hanson Profile, Mid Length Gas System, Fits AR10, QPQ Corrosion Resistant Finish, Black BABL308019P This .308 chambered (DPMS style) 16 inch barrel is machined from 416R Stainless Steel with a QPQ Corrosion Resistant finish. Their Premium Series Barrels are HP and MPI tested" ensuring the best in quality and accuracy.