Colt current production AR-15A4 20″ rifle barrel. This barrel is the same as used on the Colt AR-15A4 rifle and CR6700 rifle. Fully chrome lined, 1/7 twist with M4 feedramps. Includes factory installed barrel nut, front sight base, Colt rifle handguards, Colt gas tube, and Colt gas tube pin.
Note, the AR-15A4 barrel is not the same as an M16A4 barrel. An M16A4 barrel does not have M4 feedramps.