This .223 Wylde chambered 20 inch Fluted barrel is machined from 416 Stainless Steel with a bead blasted finish. Our Premium Series Barrels feature a FailZero Nickel Boron Coated Extended M4 Feed Ramp Extension.Featuring functionally aggressive lightweight barrel 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.BarrelSpecificationsCaliber223 WyldeLength20"Material416R Stainless SteelProfileDMRFinishBead BlastedGas System LengthRifleGas Block Journal.750"Dimpled?NoTwist Rate1:8Muzzle Thread1/2x28 TPIWeight34oz