This .223 Wylde chambered 16 inch barrel is machined from 416 Stainless Steel with a bead blasted finish. Ballistic Advantage’s Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension. This barrel features a Mk12 Mod H profile with a longer .750″ profile dimension necessary for proper installation of the OPS Inc. 12th model collar and suppressor.