This HBAR profile barrel kit - with all parts forward of the Upper Receiver - is ready for your next target or service rifle build. The highly accurate 20" barrel is SBN this includes the chamber/bore and machined from 4150 Chrome Moly Vanadium 11595E steel is rifled 1 x 9" - right hand twist. The barrel is finished in Black Nitride for protection against rust and corrosion. A standard A2 Front Sight Base with sling swivel is fitted. Kit includes A2 Flash Suppressor, Barrel Nut, Crush Washer, Delta Ring Kit and Rifle Length Gas Tube. Rifle Length Handguards are also included. These are premium quality parts molded from a fiberglass composite for heat resistance in sustained fire.