Upper Receiver – Mil-Contract M4A3 Forged “C” marked

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




Right now all receivers are Cerro Forge/Keyhole uppers with raised ‘C’

100% U.S. forging and 100% finished in the U.S. If this means something to you, pay attention to other uppers. Many non-U.S. forgings are flooding the market, and the cheapest price without a mention of where it was forged or finished, is usually a good sign of this.

No disappointments here, these are from a machine shop that knows how to finish uppers, and have done so for years. Same exact material/quality that you find on the top names, only without the high price. Forgings are one of the following: Brass Aluminum, Cerro Forge, Anchor Harvey, Mueller Brass, or Unifor (all US made material and forgings, unlike many on the market) Extremely nice forged 7075 T-6 aluminum with laser engraved T-markings per milspec print, not color filled. These receivers do have M4 feed ramps. Made to milspec drawings and hard coat type III (MIL-A-8625) anodized per milspec. Our inventory is accurate and updated by the minute, so rest assured that the number shown is the actual number we have on hand. Guaranteed satisfaction.

Additional information

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Upper Only, Add discounted fwd assist & ejection port kit (uninstalled)

2 reviews for Upper Receiver – Mil-Contract M4A3 Forged “C” marked

  1. Rated 5 out of 5

    Tom (verified owner)

    I just ordered three . Great shape not blemished in any way !!! Super fast shipping great packaging! My new go to store !

  2. Rated 5 out of 5

    Bryan (verified owner)

    You definitely can’t go wrong with these “Colt” upper receivers. That’s why I’m back to pick up some more! I originally purchased several “C” coded / Cerro Forged, M4A3, stripped uppers a while back when Integrity blew out their inventory. I was able to build an assortment of rifles, chambered in various calibers using the “C” stamped upper receivers; and the builds came out perfect and the receivers all function flawlessly. For the price, you’re certainly getting more than your money’s worth, with respect to the quality & and more importantly, the function! Due to the receivers originally being manufactured for the DOD (military) you obviously get parts with very tight tolerances, essentially greater than standard Mil-Spec! The stripped out uppers are beautifully forged, but far more important, they’re properly Machined & Finished! Absolutely no blems or tool marks present on any of the uppers. Everything is milled & drilled perfectly. I’m definitely glad to see the return of the “C” stamped receivers, and certainly happy to pick up more Colts for future builds. Thanks Integrity Arms! Well done! Now can you please have a huge blow-out sale of both Lothar-Walter & Criterion Match Barrels ( preferably in Rifle Length 😉

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