Purebred Upper Receiver

$239.00

Our Rosco stripped upper receivers are designed to work perfectly with our barrels. Every possible option went under the microscope for these uppers in order to tighten the tolerances for the purposes of enhanced accuracy and reliability. We teamed up with our OEM partner American Defense Mfg. and asked them to create the perfect upper that would fully compliment the features of our barrels. The result is a billet receiver that was built to take continued abuse while providing amazing accuracy.

(5 customer reviews)

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Our Rosco stripped upper receivers are designed to work perfectly with our barrels. Every possible option went under the microscope for these uppers in order to tighten the tolerances for the purposes of enhanced accuracy and reliability. We teamed up with our OEM partner American Defense Mfg. and asked them to create the perfect upper that would fully compliment the features of our barrels. The result is a billet receiver that was built to take continued abuse while providing amazing accuracy.

  • Upper Receiver comes with the Forward Assist and Ejection Port Cover installed.
  • Hard Coat Anodized per Mil-A-8625F, Type III, Class2.
  • Precision machined from 7075-T6.
  • M4 Feed ramps.
  • Weight- 9.2 oz.

Additional information

Weight 0.8375 lbs
Dimensions 9 × 2.25 × 2.25 in

5 reviews for Purebred Upper Receiver

  1. john (verified owner)

    Best fit to any lower I have and am digging the angled look to the perfect machining. 10/10

  2. Vanderson Le (verified owner)

    Great looking upper receiver. Nicely made. However, with the 10 different lower receivers I have (BA, Aero, BCM) the upper doesn’t fit to the rear takedown pin. I have to force it to fit with the lower to even start to see the path for the pin to fit through. Was excited for this upper only to be disappointed., especially for that price

  3. Sam (verified owner)

    Fits my ADM lower perfectly, since this upper is just a rebranded ADM. Great price when they offer 10% off and free shipping. Also I like the Rosco bull dog logo. Highly recommend.

  4. lukeburan (verified owner)

    This is an incredible upper receiver, it fit nice and snug with anodized and cerakoted receivers from Aero Precision, Silencerco, ADM, BCM, etc. not sure how the other/reviewer user had such an issue with it. I have mounted this upper with Geissele, Midwest, Forward Controls Design/Centurion, and ADM/Rosco rails, all have fit and functioned flawlessly. These uppers are my go to for any AR… the upper is where all the action happens (literally), so don’t cheap out, get quality, get Rosco.

  5. Chris.6363

    The only thing they had to do was use an
    AR-15 lapping tool with lapping compound to make sure that the receivers face where the barrels extention ring rests against the reciver and the barrel nut squeezes the barrel and receiver tightly together. You can buy that lapping tool and compounds on amazon for $27.00 and do it yourself using a drill. It’s very easy and only takes u few minutes. The tool makes sure that the receivers barrel contact face is 100% square and flat with the receivers BCG making your firearm very accurate. $230.00 for a $100.00 or less receiver is way to much ! The receiver should’ve been lapped from the factory in the first place ! Secondly, you don’t over charge your customers for something you should’ve already have done !
    And a hammer forged receiver is stronger than just a milled aluminum receiver !

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