AR-15 Upper Assembly – 16″ / 300 AAC / 1:8 / 15″ Hera Arms Keymod AR-15 Handguard / Rail

Rated 5.00 out of 5 based on 3 customer ratings
(3 customer reviews)

$329.00 $249.00

In stock



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 Keymod design handguard/rail is CNC milled from aluminum alloy and then hard coat anodized for added strength.

7075-T6 Aluminum
Mil-Spec Anodized Receiver
Pistol Length Gas Tube Assembly
16″ 300 AAC Barrel
4150 Chrome Moly Steel Nitride Coated Barrel
Standard Flash Hider
Twist Rate: 1:8
15″ Hera Arms Keymod Handguard/Rail

*Includes Bolt Carrier Group & Charging Handle*

Additional information

Weight 2 lbs
Dimensions 16 x 11 x 2 in


Barrel Length


Twist Rate

3 reviews for AR-15 Upper Assembly – 16″ / 300 AAC / 1:8 / 15″ Hera Arms Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5

    Phil Barnes

    Fit and finish is first rate. Accuracy sub moa. Great service and delivery from CBC. First rate company to deal with!

  2. Rated 5 out of 5


    Ordered this on a Friday, had it the next Tuesday. Great quality product! Excellent finish and fit, comparable with the high end (high dollar) products I’ve tested. I used this upper for developing my subsonic and standard close range munitions. I recommend CBC to all of my range/hunting friends.

  3. Rated 5 out of 5

    John Pierce

    I bought this upper several months ago. I am very pleased with the fit and finish. It has been accurate and good groupings (when there is a good shooter behind the trigger) and really enjoy shooting this. It is on an Anderson lower. Fits well. At CBC’s suggestion, I went with an H2 buffer… well. I used their black nitride BCG… failure to feed or return to battery. perfect ejection. I plan to buy CBC again. thanks.

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