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. This upper comes with back up iron sights.
Outfitted with a 15″ Gen 2 Keymod Rail that features a seven-sided keymod design, resulting in 200% more attachable surface area of a standard keymod rail. 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
- Low Profile Square Shaped A2 Type Mil-Spec Front & Rear Sights
- Constructed from 6061 Aircraft Grade Aluminum
- Calibrated and matched together as a set
- Rear Sight: Windage Adjustable MOA Adjustment
- Front Sight: A2 Post Elevation Adjustment
Product Details: AR-15 Upper Assembly – 16″ / 300 AAC / 1:8 / Sight 150-560 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail
➲ A2 Flash Hider
The muzzle device is designed to perform a specific task, like suppress flash intensity or reduce felt recoil. This A2 Flash Hider is machined from quality steel and finished with an exceptionally corrosion resistant salt bath nitride for a lifetime of service. It provides effective flash suppression that preserves the shooter’s night vision by disrupting the muzzle flash when firing in low lighting conditions. While its closed bottom with top and side ports offers reduced dust signature when shooting from the prone position while additionally acting as a compensator.
➲ Pistol Length Gas Tube
An essential component to your AR15 is the gas tube, which keeps your build up and running. This gas tube is constructed from corrosion resistant stainless steel ensuring a lifetime of service.
The barrel is one of the few components that directly affect the accuracy and weight of your build. This barrel has a nitride finish for increased strength and durability. This provides not only an impressive barrel life but ensures excellent accuracy. The barrel threads are carefully threaded to the .308 standard. Optimized for stability with a 1:8 twist rate, this 300 BLK barrel can handle heavier bullets used for subsonic loads with ease.
➲ .750 Low Profile Gas Block
The gas block is a critical link in the chain that is too often overlooked. This component ensures that your AR runs reliably. Made from high-quality steel with a smooth nitride finish, this gas block is efficiently designed to stay put with the percussion of gunfire. With its low profile this gas block allows it to fit under the most ergonomically designed handguards and rails on the market.
➲ Flip up sights
The XTS Polymer Flip-up Front and Rear Sights adhere in every way to the rigid quality standards required of all XTS brand tactical accessories. The XTS adjustable post and windage aperture make for easy alignment and sighting in, and the simplistic flip-up mechanism combined with its sleek styling makes this unit a terrific addition to the aesthetics and functionality of your rifle. Made from lightweight polymer plastic won\\\'t weigh your barrel down either. Adding one of these to your rifle is a great idea!
➲ Upper Receiver
The foundation of all good ARs is built upon a dependable upper receiver. CBC upper receivers offer best-in-class quality while providing you years of dependable service. Boasting a MIL-SPEC type III hard coat anodized finish and machined from 7075-T6 forged aluminum, this M4 flat-top receiver delivers a lifetime of superior function. You want your AR built upon a solid platform - this receiver gives you the confidence that your AR-15 will function when it counts most.