AR-15 Upper Assembly – 16″ / 6.8SPC II / 1:10 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

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

$417.00 $367.00

Only 2 left in stock



CBC Industries is pleased to announce there  Generation 2 upper assembly featuring a 7 sided Keymod Rail , perfect for 3 gunners! This AR-15 upper assembly is made from the highest quality material found in the AR world! The upper is assembled in Charleston, SC with high-quality material, meticulous workmanship & incredible prices.
The flat top M4 Mil-Spec upper receiver are forged CNC Machined from 7075-T6 Aluminum, the hardest and most durable material of any upper! To ensure even more strength they are Mil-Spec Type 3 hard coat anodized.
This 16” 6.8 SPC II barrel is made from 4150 Chrome Moly steel! This upper has 1:10 twist rate, carbine gas system and head spaced twice from the US manufacturer. This barrel is incredible accurate and durable, the strength comes from the 4150 CM steel and the Phosphate coating! 
This incredible rail has 200% increase in keymods, so your attachment position options are endless! This rail was designed for shooters that want BUIS at 45 degree angle with no additional costs for attachments.The rail is a 15” CBC Keymod rail made from Airplane Aluminum and then hard coat anodized to improve the strength! 
We assemble our uppers exclusively with Veterans of our Armed Services! These military men have an eye for detail, they scope port holes, torque to military specs & quality check each upper.

Additional information

Weight 2 lbs
Dimensions 16 x 11 x 2 in


Barrel Length


Twist Rate

8 reviews for AR-15 Upper Assembly – 16″ / 6.8SPC II / 1:10 / 15″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5

    Douglas D Gronert sr.

    Cost and performance 6.8spc/6.8spc II 60 cents per round vs $ 1.70 per round for 6.5 Grendel . Performance 6.8 loves the 16 inch barrel Grendel needs 24 inch barrel to work. They need to name it 6.8spc/6.8spc II Wylde barrel you have the ability to use either round. Now to CBC and the upper of all products I have bought from them NO not one problem ever!!!! They sent Emails on the day sent,day of delivery and completed delivery to confirm that I received it. My only concern when ordering this upper was the specs for muzzle thread 1/2×36 most common is 5/8×24 that caused concern

  2. Rated 5 out of 5

    douglas d gronert sr

    Ordered 6.8 bolt carrier group from ALEX PRO FIREARMS nickel boron 129.95 free shipping, cleaned the upper put on top of Anderson lower off to the farm. I used factory ammo Nosler 110 grain Federal ATK Fusion MSR 90 grain . Next used Huldra 545×39 mag not one failure to feed or fire, then a red jacket mag, next thermold mag then mag these mags were all 223-556×45 mags no failure to feed or fire. I feel that the combination of CBCs product and a quality 6.8 bolt carrier group makes this Firearm great. No longer have any concern about this upper. Also Three shot groups sub moa. Thanks CBC for another great upper.

  3. Rated 5 out of 5

    douglas d gronert sr.

    Searching for answers and found that its a safety factor. The muzzle brake threading 1/2×36 is used on 9mm and 6.8 barrels used on ar builds so you could not put a 556×45 brake on the 9mm or 6.8 by mistake. That would cause a problem. Again I thank CBC for workmanship and quality products.

  4. Rated 5 out of 5

    Barry Foster

    I bought the 6.8spc in January and have been pleased with it so far. I took it to the range to get it sighted in at 100yds and after sighting I was able to get 1in groups with Hornady 120gr sst. Not only does it look great but shoots very well, Thanks to all the folks at CBC for their help. I look forward to doing business again with CBC.


  5. Rated 5 out of 5


    I purchased this item to experience this 6.8 , I chose your company because I have another CBC upper in 5.56 and was very pleased with it. Well l mounted on a Anderson lower put a vortex scope on it and fell in love with it. I have since ordered parts to build to more uppers.

  6. Rated 5 out of 5


    For the price on 6.8 upper you can’t beat the deal. Shoots and functions well. Only issue I had was a few screws for the handrail were stripped out, I had to Easy-out them to remove. I contacted CBC about it, they set me new ones.

  7. Rated 5 out of 5


    When are y’all going to get more in stock

  8. Rated 5 out of 5

    John B

    This Upper is just what i was looking for. Great stopping power 6.8 spc and the Keymod option is Wonderful.

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