AR-15 Upper Assembly – 16″ / .223 | 5.56 / 1:8 / 12″ CBC Arms Keymod AR-15 Handguard / Rail

Rated 5.00 out of 5 based on 8 customer ratings
(8 customer reviews)

$299.00 $199.00

Only 2 left in stock

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This AR-15 upper assembly is made from the highest quality parts and is assembled in Charleston, South Carolina. The 12″ CBC Arms Keymod design is the classic Picatinny at the 12 o’clock position with Keymod slots at the 3, 6, and 9 o’clock positions to mount your favorite accessories.



Barrel: 16” 5.56 Melonite Barrel Chrome Moly
Twist Rate: 1/8
Feed Ramps: M4
Gas Block: Steel .750 Low Profile
Gas Tube: DGI Stainless Carbine-Length
Muzzle Device: Steel A2 Style Flash Hider
Rail: 12″ CBC Free Float Keymod Rail
Upper Receiver: Forged Upper Receiver
Upper Components: Mil-Spec Forward Assist, Mil-Spec Dust Cover, and Brass Deflector


Failure to observe safe firearm handling practices may result in serious bodily injury or death. CBC Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product. Additionally, it is highly recommended that the firearm (as with all new firearms) is thoroughly inspected, cleaned and oiled prior to use.

Additional information

Weight 2 lbs
Dimensions 16 x 11 x 2 in


Barrel Material

Barrel Coating

Barrel Length

Twist Rate


8 reviews for AR-15 Upper Assembly – 16″ / .223 | 5.56 / 1:8 / 12″ CBC Arms Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5

    Anthony Solesbee

    Bought this CBC upper assembly very last minute and everyone at CBC was so helpful and made sure I received it in time. The upper is absolutely killer looking. Can’t wait to bolt it to my lower!

  2. Rated 5 out of 5

    Allen Ward

    I received my new upper today and the upper is well built and looks fantastic. I mated it up to a spare Stag lower and it locked up tight. I really like the Hera Arm handguard and order another one for one of my other rifles. I will be taking to the range this weekend to dial it in.

  3. Rated 5 out of 5

    Joey Rodriguez

    I received my upper today it was put together well. This is my first purchase with CBC, I will continue to shop here. Very helpful staff when I called with a question about shipping. Thanks CBC

  4. Rated 5 out of 5

    Timmy Boyd

    I am more than pleased with the transaction and the awesome Upper I received from CBC . More than I expected and at a fantastic price. I will definitely be doing all my future AR business here. Thank you CBC .

  5. Rated 5 out of 5


    I got this upper in a 1 in 9 twist and it is perfect. The construction is superb and it was shipped very quickly once the barrels came in. Thanks for making this available and for doing a great job helping us make America safe again!
    Looking forward to building another rifle with one of your uppers here soon!

  6. Rated 5 out of 5

    Joe n

    Got the upper in and was amazed on how well the upper was built and the quality of the upper was ,I’m am very pleased with the purchase and will buy from them again plus you can’t beat there customer service there great to deal with.a good friend of mine bought an upper that cost three times as much and he even said the quality of the upper I bought from cbc is better than what he got which pissed him off so now he will be buying from cbc keep up the good work thank you guys very much for the awesome upper and great customer service

  7. Rated 5 out of 5

    Eric Nail

    I’m so impressed with CBC. They’re putting out amazing value parts that make building a high quality rifle possible without breaking the bank. They really are the real deal.

    My upper was shipped fully assembled, drop in ready and quickly! The turn around was much less than 2 weeks, (5-6 days) and they keep you up to date with tracking of course.

    The upper itself is accurate, looks incredible, light weight, and extremely convenient with pretty much every mounting option I could ever want. Did I also say it looks good? Cause it looks so sexy…

    If youMre on the fence, really it’s worth while to take the plunge. I recommend to all my friends and family.

    Eric nail- WA State

  8. Rated 5 out of 5


    I have been waiting to make this review until I have put several hundred rounds through this upper. I have now reached the 500 round mark and am ready to review! First off I want to talk about shipping, it was low-cost and fast. It took CBC about 3 days to send it out and about 5 more days for it to reach my front porch, so 8 total.. not bad!!
    Next I will touch on the looks and feel of this upper.. It has no machining marks and looks and feels extremely high quality for the very low price! The black finish is nice and polished and matches my stag arms lower perfectly. (the picture is very accurate of what it looks like)
    The barrel is 5.56, 1/8 twist, 16 inches, which in my opinion is the best twist rate and best length for a 556 barrel.
    Next is the Accuracy.. I took it out and shot at 50 and 100 yards with 50,55,62gr ball ammo and easily got 1/2 inch to 1 inch groups with each different ammo types.
    The upper is very lightweight, looks great, feels great, shoots very well (accurate and 0 malfunctions in 500 rounds)
    It has m4 feed-ramps and is very reliable thus far.
    BEST OF ALL I GOT THIS UPPER FOR $245!! YES $245 !!!!!! That’s half as much as pretty much any Midwest industries upper!!
    I recommend CBC to everyone and I think their quality control and prices are very hard to beat!
    Thank you CBC I will be shopping with you again!

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