• Precision machined to M16/M4 Specs
  • Mil-spec type III hard coat anodizing
  • M4 feed ramps


  • Material: 7075-T6 Aluminum
  • Finish: Type III Hardcoat Anodized
  • Weight: 8.6 oz.


  • AR-15


  • 1x Phase 5 Mil-Spec Flat Top Upper Receiver
  • 1x Forward assist assembly (installed)
  • 1x Ejection Port Cover Assembly (installed)


Precise tolerances and good workmanship are important for an AR15 upper receiver's reliability, and Phase 5 Tactical puts both of them into their AR15 flat top upper receiver.

Phase 5 Tactical starts with the highest quality metal available, then machines it to the exact dimensions necessary through their advanced manufacturing processes. It is designed to fit together flawlessly with other common AR15 components. M4 feed ramps are cut into the receiver to ensure reliability when chambering rounds. This upper receiver is topped off with a layer of Mil-Spec type-3 anodizing to stop wear and corrosion. The uniform black color of this coating will match perfectly with other AR15 parts. The Picatinny rail slots on top are ready to accept your preferred optic or rear sight.

This upper receiver is the best option if you are looking to build a custom AR or upgrade your factory model. It has Phase 5 Tactical's name on it, so you can be sure that this is a high-quality upper receiver!

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Reviews (3)

  • Incredible Fit on Lower

    Posted by Chuck Irwin on 28th Mar 2019

    Sometimes one simply hits it right ! This upper has absolutely zero rocking on the lower. I tried this because I have used so many other Phase 5 components and have had no issue with any of them. I am coming back for more, LOL!

  • great upper

    Posted by Unknown on 12th May 2016

    Awesome for my first build

  • good reciever

    Posted by Unknown on 30th Apr 2016

    Good looking recicver with good even finish and nice fit

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