This A2 Gov’t. 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 chrome lined and machined from 4150 chrome moly vanadium 11595E steel is rifled 1 x 9″ – right hand twist. The barrel is finished in black manganese phosphate 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 – they will not deform when subjected to high barrel heat.