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#22 – AR-15 Upper Assembly – 10.5″ / 5.56 / 1:7 / 10″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

Icon - 5.56 NATO AR CaliberIcon - 1:7 Twist RateIcon - 10.5 AR Barrel
(8 customer reviews)


In stock

This AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It is?built around a 10.5 inch, 4150 chrome moly barrel 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 AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It is?built around a 10.5 inch, 4150 chrome moly barrel 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.

160 750

This upper assembly comes with a standard A2 flash hider that effectively suppresses muzzle flash and protects the 1/2?28 barrel threads if you are planning on adding a muzzle break in the future.

  • 7075-T6 Aluminum
  • Mil-Spec Anodized Receiver
  • Carbine Length Gas Tube Assembly
  • 10.5″ 5.56 Barrel
  • 4150 Chrome Moly Steel?Nitride Coated Barrel
  • Standard Flash Hider
  • Twist Rate: 1:7
  • 10″ Keymod handguard/rail
  • *Does Not Include Bolt Carrier Group & Charging Handle*

Please Note: An ?AR-15 Pistol? upper assembly has a barrel less than 16? in length. Pistol uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law. Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.

Product Details: #22 – AR-15 Upper Assembly – 10.5″ / 5.56 / 1:7 / 10″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

➲ CBC Keymod Handguard

New for 2020, these AR-15 handguards are built to provide rugged, reliable performance. Designed with the advanced shooter in mind, these handguards are both sleek and ergonomic in the hand and that translates into faster on-target performance and ease of use. These AR handguards provide Keymod slots for mounting attachments and feature robust steel mounting hardware to ensure an easy rock-solid installation.

➲ 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.

➲ .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 phosphate 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.

➲ Carbine Gas Tube

An essential component to your AR15 is the gas tube, which keeps your build up and running. This carbine-length gas tube is constructed from corrosion resistant stainless steel ensuring a lifetime of service.

➲ 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.

➲ Barrel

The barrel is one of the few components that directly affect the accuracy and weight of your build. This barrel is chambered for 5.56 NATO ammunition and utilizes a .750 inch gas block. It is corrosion resistant resulting in extended barrel life and has a nitride finish. This provides not only an impressive barrel life, but ensures excellent accuracy.

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!

8 reviews for #22 – AR-15 Upper Assembly – 10.5″ / 5.56 / 1:7 / 10″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

  1. Ron

    Purchased this upper for a SBR build and could not be happier. Ordered on 7/1/2016 and upper shipped on 7/7/2016. Fit and finish were superb, and it fir my PSA15 lower like a glove. Added a Fail Zero NBC BCG, CMC 3.5# trigger, and a Vortex Viper red dot. Took it to the range, and zeroed the red dot at 65 yds. Accuracy was incredible for such a short barrel, had several three shot groups that could be completely covered with a quarter! T

  2. Shane

    So far excellent. Fit is perfect and I couldn’t be happier. Only have about 50 rounds through it with a non magnified red dot, but the accuracy seems to be really good. Looking to order my next CBC upper in 300 BO.

    Great job and great prices CBC!

  3. Gregg S

    Ordered my upper, started off by shipping a week earlier than expected, came in, great packaging and flawless. Dropped it on my new lower, threw a cheap 35$ truglo non magnified red dot on and off to the range I went. Being my first short barrel/pistol AR I wasn’t sure what to expect but now I think it’s going to be hard to go back to my 16″ & 20″ AR’s. Accuracy was spot on and 100% confident with every shot, especially for running the cheap red dot. The length, light weight and Center of balance perfectly over the Lower receiver I believe helped a lot, being able to steady quick and not getting a lazy posture after shooting a while.
    Only reason I did not give 5 stars was due to heat transfer into the handguard. Being so lightweight I was expecting a fair amount of heat, but it got hot fast and quick, first mag I emptied without stopping after sighting in, but luckily I found myself most comfortable gripping the mag well anyways and decided to throw a magwell grip on there. Last “negative” is the common/typical AR dislike for steel cases, only liked the brass. Might change after I get some more rounds thru her, might not. A lot longer review than I planned, but wasn’t much for reviews when I bought and hopefully this will help someone make a decision to buy this, or another receiver or not. I would put money their other uppers/parts are on par with this item.

  4. Ken

    First I would like to thank the Veterans at CBC Industries for there services keeping us free so we can do what we like to do. Well it is nice to see such a well built upper and built in the US by Veterans and Americans the fit and finish is very nice thank you CBC. I will be letting all my friends know about CBC. I ordered my 10.5- 556 upper on 2/6/17 and received it on 2/13/17 great services

  5. Brian

    Great job fellows , got it and put it on fired flawless.. Love the quality ,you have a new customer . I have 6 lowers guess where I will be shopping.. One reason I chose CBC was it employed vets. Thank you boys for your service.

  6. Jason

    Purchased this late last year. The quality of this barreled upper overshadowed the lengthy wait time to receive it.
    Very happy look forward to purchasing from CBC for future builds.

    Copy link to view photo!

  7. Scott

    im quite pleased with this upper…..although the gas block was not tread-locked (came loose while test firing) the fit of the rail, the finish and quality of the parts are very nice. lead time was 2 weeks , i received a call from customer service after 2.5 weeks (which i thought was pretty cool) saying the rail was back ordered although they were expected to be in the next day and they would be building my upper asap upon there arrival. 7 days (including a weekend) later it arrived. ive put over a hundred rounds though it since tightening and tread-locking the gas block with zero issues. i will definitely be looking to CBC for future builds. Thanks CBC!!!

  8. bzeigler (verified owner)

    I love it. Shipping was fast and at the upper came in at an affordable price. I also bought the ambi charging handle to go with it. I cant believe how nice both are. The charging handle compares with the other more-expensive brand name ones I have on my other AR15s. The upper looks awesome and paired up with my Anderson lower perfectly. It is lightweight and solid. I’m really happy with the way my build came out. CBC is a great company. I just ordered an upper receiver for my AR9 and got a great deal. I’ll keep coming back!

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Additional information

Weight 3.4 lbs
Dimensions 27.5 × 4.5 × 4.5 in

Barrel Length