Ballistic Advantage Premium Black Series 16" 6.5 Creedmoor Barrel, BA Hanson Profile w/ Lo-Pro Gas Block, Mid Length. This 6.5 Creedmoor chambered 16" BA Hanson Profile barrel is machined from 416R stainless steel with a QPQ corrosion resistant finish. This Premium Black Series showcases a 1:8 twist rate, a 5/8" x 24 thread pitch, and a .875" gas journal diameter. This Ballistic Advantage barrel is perfect to start your next AR10 workbench project.