AR-15 Upper Assembly – 10.5″ / 300 AAC / 1:8 / Linear Compensator / 12″ CBC Arms Keymod AR-15 Handguard / Rail

Rated 4.50 out of 5 based on 2 customer ratings
(2 customer reviews)

$399.00 $249.00

Only 8 left in stock

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This AR-15 upper assembly is made from the highest quality parts and the rails are engineered and manufactured in Germany with the remaining components being made within the United States. The 15″ Hera Arms Hybrid design is CNC Milled from aluminum alloy and hard coated anodized for added strength.

7075-T6 Aluminum
Mil-Spec Anodized Receiver
Pistol Length Gas Tube Assembly
14.5″ .223|5.56 Pinned & Welded Barrel 
4150 Chrome Moly Steel Nitride Coated Barrel
Twist Rate: 1:7
15″ Hera Arms Hybrid Handguard/Rail
Overall Length 16″

*Does not include Bolt Carrier Group & Charging Handle

Additional information

Weight 2 lbs
Dimensions 16 x 11 x 2 in


Barrel Material

Barrel Coating

Barrel Length

Twist Rate


2 reviews for AR-15 Upper Assembly – 10.5″ / 300 AAC / 1:8 / Linear Compensator / 12″ CBC Arms Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5

    Calvin Kemp

    That is a true statement about the looks, quality, performance, price, and prompt service accompanying my purchase of this upper. (My third upper from CBC in as many months) Great accuracy with nice weight and the Hera
    linear compensator does a super job of pushing blast away from bench shooters. There is a backorder on the flip up sights but my email was answered the day I sent it with reasonable ship date. Doesn’t get much better than this company.

  2. Rated 4 out of 5


    Took a bit of work to get it right. They sent the wrong barrel and gas system the stated it came with. Would not shoot with carbine gas system. They made it right and no problems after that. All in all. Very good setup. I use this for SWAT team operations and it hasn’t failed when used in training or in field. Of course I haven’t fired it in field work. Hopefully won’t ever have too.

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