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AR-15 Unassembled Upper Assembly – 20″ / .223 | 5.56 / 1:8 / Spiral Flute / 15″ CBC Arms Keymod AR-15 Handguard / Rail

Icon - .223 Wylde AR CaliberIcon - 1:8 Twist RateIcon - 20 AR Barrel

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.

$399.00 $239.99

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Stock Status: Available for Immediate Production

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Description

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.

ar-15-unassembled-upper-assembly-20-223-5-56-1-8-spiral-flute-15-cbc-arms-keymod-ar-15-handguard-rail-updated

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 | 5.56 / 1:8 / Spiral Flute / 15″ CBC Arms Keymod AR-15 Handguard / Rail

➲ Upper Receiver

The foundation of all good AR's 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 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 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.

➲ Barrel

The barrel is one of the few components that directly affect the accuracy and weight of your build. This barrel utilizes the popular and versatile .223 Wylde chamber, which allows for the safe usage of 5.56 NATO ammunition and enhance reliability. It is corrosion resistant resulting in extended barrel life and has a phosphate finish. This is the perfect barrel for an AR  build, keeping length and weight to an absolute minimum while still offering a significant ballistic advantage.

➲ 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.

➲ Keymod Handguard

Your AR-15 handguard has huge implications in terms of how much you enjoy your shooting experience. Our Keymod handguard offers more than just the accuracy enhancements that come with a free-floating rail. It features a full length picatinny top rail that sits flush with M4 flat top receivers allowing you to have more space for optics and back up iron sights. Designed with size and weight savings in mind, it features featuring picatinny inserts at 3:00, 6:00 & 9:00 positions. The slim profile is comfortable to grip while still allowing enough room for low profile gas blacks underneath. This AR-15 handguard is machined from 6061 aluminum, has a hard coat anodized black finish, resulting in a durable and dependable mounting platform, providing you with strength and stability.

CBC provides a wide selections of AR-15 upper assemblies in a variety of styles and lengths - all partial AR-15 uppers are assembled with everything less the charging handle and bolt carrier group. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. Better yet, all CBC AR-15 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 uppers are backed by our Lifetime Warranty - if any CBC upper assembly becomes defective, we will repair or replace it at no charge. Get your AR-15 upper assembly at CBC today and save with free shipping!

Additional information

Weight 6.8 lbs
Dimensions 24 × 8 × 4 in
Platform

Caliber

Barrel Material

Barrel Coating

Barrel Length

Barrel Fluting

Thread Pattern

Twist Rate

Gas System Length

Rail/Handguard

Handguard Length

15"

Bolt Carrier Group & Charging Handle

No Bolt Carrier Group & Charging Handle

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