All Wilson Combat Match Grade barrels are precisely crafted of the finest American- made 416R rifle rated steel on computer controlled equipment to Wilson's exact list of technical specifications. These proven barrels feature a hand-polished bore and feed ramps and then complete a rigorous final inspection process that ensures your new barrel will meet your most demanding expectations. All barrels feature crisp CNC markings, precision muzzle crown and a chamber and gas port optimized for reliability.The Wilson Combat Tactical Hunter profile AR barrels are the ideal profile to turn your large caliber rifle into the ultimate hunting firearm. FeaturesMatte bead blasted stainlessGas Block Seat: .750" x .920" - Dimpled for set screwButton rifled