Colt LE6921 5.56 NATO 14.5" Complete Upper Receiver

The Colt LE6921 is a complete AR-15 upper receiver assembly chambered for 5.56x45mm NATO and 223 Remington, offered for buyers who want a ready-to-mount semi-automatic upper for an AR-15 build or replacement.

The upper has a 14.5-inch barrel with a black parkerized finish and a Magpul adjustable flip-up rear sight. It is fitted to mil-spec AR-15 dimensions and has a picatinny-style flattop rail for mounting optics and accessories. The raw listing also describes an A2 flash hider and an M4 polymer handguard.

The assembly includes the charging handle, bolt, and bolt carrier group, so it is ready to install on a compatible AR-15 lower receiver.

• Brand: Colt
• Model: LE6921
• Platform: AR-15
• Calibers: 5.56x45mm NATO, 223 Remington
• Barrel Length: 14.5 inches
• Action: Semi-Auto
• Finish: Black Parkerized
• Sights: Magpul Adjustable Flip-Up Rear Sight