This AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It is built around a 16 inch, 4150 chrome moly barrel that is chambered in 300 Blackout and has a black nitride finish. The upper receiver is a forged M4 flat top upper, allowing you to easily attach rifle scopes and red dot sights to the picatinny rail.
Outfitted with our most popular 15″ Gen 2 Keymod Rail that features strong attachment points for accessories resulting in accessories and optics having an excellent return to zero capability when detached and reattached. The rail also features a full-length picatinny top rail that sits flush with the upper receiver and has anti-rotation tabs to keep it locked in place. This upper assembly comes with a standard A2 flash hider that effectively suppresses muzzle flash and protects the 5/8×24 barrel threads if you are planning on adding a muzzle break in the future.
- 7075-T6 Aluminum
- Mil-Spec Anodized Receiver
- Pistol Length Gas Tube Assembly
- 16″ 300 AAC Barrel
- 4150 Chrome Moly Steel Nitride Coated Barrel
- Standard A2 Flash Hider
- Twist Rate: 1:8
- 15″ CBC Arms Gen 2 Keymod Handguard/Rail
- *Does Not Include Bolt Carrier Group & Charging Handle*