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
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