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.This Urban Super Sniper design cuts down the weight of a Super Sniper barrel by 20 ounces, resulting in an amazingly nimble and precise tactical rifle with all the accuracy and dependability its predecessor is famous for. FeaturesMatte bead blasted stainlessGas Block Seat: .875" x .920"- Dimpled for set screwButton rifled