18 inch 6.5 Creedmoor AR-308 Premium Black Series Hanson Profile Midlength barrel machined from 416R stainless steel with a QPQ corrosion resistant finish. Hanson profile, mid-length gas system, pinned lo-pro gas block. Twist rate 1/8, muzzle threads 5/8x24. Weight 38.4 oz. Length 18 inches. SKU BABL65CR21PQ. HP and MPI Tested. DPMS style for .308 platform.