AR-15 Upper Assembly – 24″ / .223 | 5.56 / 1:8 / Spiral Flute / 15″ CBC Gen 2 Keymod AR-15 Handguard / Rail

Rated 4.92 out of 5 based on 12 customer ratings
(12 customer reviews)

$359.00 $259.00

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This AR-15 upper assembly is made from the highest quality parts and features the CBC Industries Generation 2 seven sided Keymod rail. The 15″ CBC Arms Gen 2 Keymod rail is perfect for 3 gunners.

7075-T6 Aluminum
Mil-Spec Anodized Receiver
Rifle Length Gas Tube Assembly
24″ .223|5.56 Spiral Barrel 
4150 Chrome Moly Steel Phosphate Coated Barrel
Twist Rate: 1:8
15″ CBC Arms Gen 2 Keymod Handguard/Rail

*Does not include Bolt Carrier Group & Charging Handle

Additional information

Weight 2 lbs
Dimensions 16 x 11 x 2 in


Barrel Length

Barrel Fluting


Twist Rate

12 reviews for AR-15 Upper Assembly – 24″ / .223 | 5.56 / 1:8 / Spiral Flute / 15″ CBC Gen 2 Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5


    Received my upper today looks awesome, can’t wait to shoot it. Thanks CBC. I’m impressed even after dealing with a hurricane my upper was shipped on time.

  2. Rated 5 out of 5

    Mark Stolz

    She arrived on time and in packaging that was far superior to what I expected. The company was quick to respond to emails.

    This has to be one of the nicest looking uppers that I have seen. Tight and thorough workmanship. I am still waiting to get her to the range, but I know that I’ll be pleased. Between product and contact I have to say that CBC is an awesome company. I highly recommend!

  3. Rated 5 out of 5


    I have not been able to take it to the range, but when I do, I’m sure I’ll be pleased. Shipped out no later than the lead time, and i received it 3 days later; keep in mind there was a hurricane that week as well. I will definitely be shopping here again, thanks to everyone there CBC for providing an excellent upper for an excellent price.

  4. Rated 5 out of 5

    Richard B

    First time customer. Arrived in a timely manner. Customer service with Chris is superb.
    Good quality and professional made product. Craftsmanship is flawless! Definitely recommend CBC to anyone!

  5. Rated 4 out of 5


    Order placed Oct. 1st, arrived Nov. 7th well packed. Upper is good, keymod handguard is good, bcg is excellent. This is my 3rd barrel and every one has had minor scratches through the finish from the installation of the gas block, most notably on the spiral flute edges. Chamber and rifling look good. With the exception of minor assembly marks, this upper is very good quality and is a bargain for the price. Shoots good groups. If you’re more on performance than looks, you’ve found a good deal. Four stars for assembly marks and long lead time.

  6. Rated 5 out of 5

    Jeremy haas

    Ordered this expecting standard ar barrel what I didn’t expect is this beast, mounted it on a plum crazy synthetic lower it fit flawlessly took it out to the range and after sighting the scope in I was shooting 1″ groups at 100 yds then went out to 200 yds still a 1″ group very nice upper I will recommend to all my friends.

  7. Rated 5 out of 5

    Kris Sisco

    Awesome item, awesome price, great customer service!!!!

  8. Rated 5 out of 5

    Clay parker

    Received the upper in the stated lead time and was very pleased to find no issues whatsoever in quality or workmanship. Paired it up with a Bushmaster lower and it fit tight to the lower. I achieved groups of 1 inch or less at 100 yards, and with about 250 rounds through the upper so far, it is proving to be a very good buy. I will definitely buy from CBC again and would recommend friends to do the same.

  9. Rated 5 out of 5


    Have had my new upper on my rifle for about 2 months now and about 500 rounds through it. Only been shooting at 100yds so far and I’m amazed. Shooting just plain jane 55 grain federal I’ve been easily and consistently getting 1 moa or less at times. And even not having a threaded barrel/brake it’s so heavy that it soaks up all of the recoil. Great job gentlemen!!! I’m excited to get some nice loads and start shooting the legs off a ticks ass!!! Thanks again!!!

  10. Rated 5 out of 5

    R. Cooper

    I ordered this complete upper a few weeks ago on a sweet sale. Arrived pretty quickly. This upper is an outstanding value. Sighted it in at 100 yards and it’s shooting sub-moa straight out of the box. It’s now become my go-to varmint gun. Shots up to 300 yards so far and it’s money in the bank. I’d recommend this upper to anyone. It’s a great quality upper for a great price.

  11. Rated 5 out of 5

    Alan M Eizman


  12. Rated 5 out of 5

    Gregory Averill

    Had my upper with in a week, fit my Ruger perfectly put a burris scope on broke in the barrel….an then was pretty amased at group’s I was holding out to 500yds…….very impressed with everything about this upper……..outstanding job cbc thanx..

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