Not many things are quite as satisfying as hand assembling your own AR15 upper assembly. This complete do it yourself upper assembly build kit, contains everything you need to except for the bolt carrier group and charging handle. Once built this upper receiver assembly is ready to attach to any Mil-Spec lower receiver.
This build kit includes a 20 inch, 4150 chrome moly barrel that has a black phosphate 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. It is outfitted with a 15″ Keymod handguard that features strong attachment points for accessories resulting in accessories and optics having an excellent return to zero capability when detached and reattached.
- 7075-T6 Aluminum
- Mil-Spec Anodized Receiver
- Carbine Length Gas Tube Assembly
- 20″ .223 Wylde Barrel
- Spiral Fluted
- 4150 Chrome Moly Steel Phosphate Coated Barrel
- Standard Flash Hider
- Twist Rate: 1:8
- 15″ Keymod Handguard/Rail
- *Does Not Include Bolt Carrier Group & Charging Handle*
Product Details: AR-15 Unassembled Upper Assembly – 20″ / .223 WYLDE / 1:8 / Spiral Flute / 15″ CBC Arms Keymod AR-15 Handguard / Rail
➲ 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.
➲ Rifle Length Gas Tube
An essential component to your AR15 is the gas tube, which keeps your build up and running. This rifle-length gas tube is constructed from corrosion resistant stainless steel ensuring a lifetime of service.
➲ .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 .750 low-profile 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.
➲ 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 shooters night vision by disrupting the muzzle flash when firing in low light 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.