Ballistic Advantage Premium Black Series, Hanson Profile Barrel, 223 Wylde, Fits AR15, 16 Threaded Barrel, 1/2x28 Thread Pitch, 1:8 Barrel Twist, Mid-Length Gas System, QPQ Finish, Black, Included Low Profile Gas Block BABL223013PQ This .223 Wylde chambered 16 inch barrel is machined from 416R Stainless Steel with a QPQ finish. The Premium Black Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension. Hanson Series Barrels feature the proprietary BA Hanson profile and include a pinned lo-pro gas block.