MPN: APRH100270


  • Mounting hardware included
  • Mil-Spec
  • Made in the U.S.A.


  • Material: Steel
  • Weight:
    • Ejection Port Cover Door Assembly: 0.74 oz.
    • Forward Assist Assembly: 0.78 oz.


  • AR-15


  • 1x Ejection Port Cover
  • 1x Ejection Port Cover Rod with C-Clip
  • 1x Ejection Port Cover Spring
  • 1x Forward Assist Assembly
  • 1x Forward Assist Spring
  • 1x Forward Assist Roll Pin


Whether this is your first build or you need to replace old parts on your AR-15, you're going to need a quality AR-15 upper parts kit to work with. Aero precision covers all the bases, and when it comes to a Mil-Spec AR-15 upper kit they have you covered. You want to do business with a company you can trust, a company like Aero Precision.

You Have to Walk Before You Can Run

Every AR-15 upper build kit is not created equal, sometimes aftermarket parts just don’t match up. An Aero upper parts kit is meticulously produced adhering to Mil-Spec standards. So, from there it’s kind of like putting together a jigsaw puzzle. When you know what you start with the outcome can be predictable. In this case, you don’t wind up with a picture, you get a fully functioning AR-15. Aero Precision produces their AR-15 upper build kit to the same high standards they hold every part they create up to. You may not need match grade parts for this build, but you still demand quality for your money.

The Company You Keep Makes A Difference

Certainly, you don’t want to see your hard earned dollars drifting away to God only knows where. Aero Precision is an all American company whose components are used by law-enforcement and members of the military. You’re going to want to get your AR-15 upper kit from a company that professionals not only use but trust. Aero Precision will give your AR-15 upper build kit the attention to detail that it deserves, and you expect. You should settle for no less than an Aero Precision upper kit.

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