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

Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

This product has been discontinued.


DISCLAIMER: This is any Item or Assembly for sale that may have a rough appearance due primarily but not limited to milling, dents, scratches, uneven finish and missing or poorly applied stenciling. The term blemished applies to any defect to the appearance of the item or assembly sold and does not affect its function.
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 in rugged black.
The barrel is made from the most durable material in the barrel world, 4150 Chrome Molly Steel! These barrels are NOT chromed lined because that reduces accuracy, it features Nitride Coating to increase durability and reduces wear & tear! It features a gas impingement system operating at the carbine length at 1:8 twist. Nothing is overlooked on this barrel, it is even head spaced twice from the manufacturer for reliability!
The 13” Keymod by Hera is engineered and manufactured in Germany. This rail has slight blemishes (scuffs).This modern designed rail is made from Airplane grade Aluminum! The rails are then hard coat anodized to improve the strength! To top it off, Hera’s “Anti-Turning Milling” eliminates turning.
 As everyone knows, CBC Industries assembles there uppers exclusively with Veterans of our Armed Services! These military men have a found place in their heart for the 5.56, so they mic port holes, torque to military specs.The end result, the highest quality upper assemblies for the money in the market!

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

  1. Rated 5 out of 5

    Todd A.

    Well, I wasn’t sure about this…..buying a blemished upper and all, but I guess the proof is in the pudding! My AR upper arrived today, packaged like a champion, and I have to tell you, just some minor surface imperfections, that you would not normally even look for. Absolutely nothing that is going to interfere with any performance of this quality built upper.

    The upper is solid, well built, and lightweight. Can’t wait for the temperature outside to get above zero, so I can try this bad boy out at the range. I am very please so far, and to be honest, don’t have any concerns about this uppers performance at the range.

    Great job by CBC from the get go, yeah I had to wait a bit, but it was worth it. This upper is extremely high quality, and well built by obvious professionals. Great job and thank you!

    Keep up the great work CBC.

  2. Rated 5 out of 5

    Robert Robertson

    The quality of the workmanship are excellent I have both the 308 and the 5.56. I wish they would continue offering a bolt carrier group with the purchase.
    A side-charging model would be a dream come true.

    The accuracy is excellent have had zero failures.

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