Colt’s 14.5″ Complete Upper Receiver 5.56NATO

Colt’s M4 Complete Upper assembly. 14.5″ M4 Profile chrome lined barrel. A2 flash hider, 1/2″x28 threaded muzzle. Complete with M16 bolt carrier group, charging handle, A2 fixed front sight and Magpul BUIS folding rear sight. Black anodized and parkerized finish.

• Manufacturer: Colt’s Manufacturing
• MPN: LE6921CK
• Barrel Length: 14.5″
• Barrel Twist: 1/7 RH
• Barrel Type: M4 Profile
• Barrel Material: Chrome Moly Vanadium
• Muzzel Thread: 1/2×28
• Flash Hider: A2 Flash
• Receiver Type: A3 Flat Top
• Caliber: 5.56x45mm NATO