This 20" 22 ARC barrel is machined from 416 Stainless Steel with a bead-blasted finish. Our Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.Featuring functionally aggressive flutes and crisp, clean lines, BA Fluted barrels deliver the perfect balance of weight and rigidity. Utilizing six and eight flute designs we've achieved weight reduction up to and exceeding 16 ounces. Confidently lighten your kit without sacrificing an ounce of accuracy.SKUBABL22ARC03PLLength20"MaterialHardened 416R Stainless SteelProfileDMRFinishFluted Bead BlastedTwist Rate1:7"Gas System LengthRifle +1Gas Block Journal.750"Muzzle1/2x28 ThreadedWeight46.2 oz