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AR-15 Blemished Upper Assembly – 16″ / 300 AAC / 1:8 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

Icon - 300AAC Blackout AR CaliberIcon - 1:8 Twist RateIcon - 16 AR Barrel
(1 customer review)

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.

$319.00 $229.00

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Description

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.

ar-15-upper-assembly-16-5-56x45-1-7-midlength-15-cbc-arms-keymod-gen-2-ar-15-handguard-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*

Product Details: AR-15 Blemished Upper Assembly – 16″ / 300 AAC / 1:8 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

➲ Keymod Handguard

Your AR-15 handguard has huge implications in terms of how much you enjoy your shooting experience. Our seven sided Keymod handguard is built to handle the hardest use and abuse of tactical and competitive shooting while offering more versatility than other handguards. 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. Due to the “7 sided design”, this rail has more than 200% more attachable surface area of a standard keymod rail. This AR-15 handguard is machined from 6061 aluminum, has a hard coat anodized black finish.

➲ 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.

➲ 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.

➲ .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 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. 

➲ 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.

CBC Blemished AR Parts & Assemblies - Blemished AR parts are 100% functional guaranteed AR assemblies & parts that may have acquired minor dents or dings, scratches, milling marks, or uneven stenciling during the production process - many times very minor and unnoticeable. For this reason, these AR parts and assemblies do not meet our high standards for finish quality and we offer them to you at a reduced price. Save even more with CBC blemished reduced price AR parts!

Additional information

Weight 4.2 lbs
Dimensions 27.5 × 4.5 × 4.5 in
Platform

Caliber

Barrel Length

Rail/Handguard

Twist Rate

Condition

Blemished

1 review for AR-15 Blemished Upper Assembly – 16″ / 300 AAC / 1:8 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

  1. Micah Giddings (verified owner)

    Ordered one of these for the wife since she has decided to give deer hunting a try this year and wants to use a rifle that works just like her .22. Super pleased with the upper. The only thing I could find was a tiny scratch on the ejection port cover that took some time to find and it is missing any CBC markings. A quick head space check on the bolt carrier group I ordered with it and off to the range (the shooting table on my deck). Fit, function, and accuracy are on the money. The wife is crazy thrilled with it as am I. Will definitely order CBC products and recommend them to others.

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