This Colt upper receiver group in 5.56 NATO includes an original Colt 11.5-inch barrel with a front sight post gas block, the upper receiver and a bolt carrier group. The rail handguard is a Daniel Defense 7-inch Omega with its rear sight, and a Geissele Airborne charging handle completes the assembly. The seller describes the bore as bright with strong rifling and the overall condition as very good.

The group suits a shooter building or refreshing an AR-pattern rifle in 5.56 NATO who wants a rail and charging handle already fitted. Barrel length and the rest of the build decide which rules apply, so check your state's firearm laws for the finished rifle before you assemble it. The seller rates the upper as very good overall, so inspect the parts on arrival.

Key features

• Original Colt 11.5-inch barrel with gas block
• Daniel Defense 7-inch Omega rail handguard
• Geissele Airborne charging handle
• Upper receiver and bolt carrier group
• Bright bore with strong rifling

This upper is a firearm, so it ships to your FFL dealer, where you complete Form 4473 and pass the background check.