Mk1 AR15 Upper Receiver, Assembled

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(4 reviews) Write a Review
Mk1 AR15 Upper Receiver, Assembled

The Mk1 AR-15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps.

Specs:

  • 7075-T6 Aluminum
  • Mil-A-8625F, Type III, Class2 anodized finish
  • M4 feedramps
  • Forward assist & ejection port door included (assembled)
SKU:
MK1UR

4 Reviews

  • 5
    Mark1 upper receiver

    Published by Robert Mccollum on 21st Dec 2023

    Ordered this upper receiver to go on a griffin mk2 lower the fit and finish is great. They have awesome quality control.

  • 5
    Great upper

    Published by Jared on 21st Aug 2023

    Like the other review stated, no T marks, but I’m fine with that. Great fitment and uses a thermal fit for barrel extensions, which is always a plus for me

  • 5
    Quality product

    Published by Ricky Humphrey on 16th Feb 2023

    I bought both the lower and upper to do a Griffin build both receivers matched perfect and nice with no wobble. I am very pleased with the he quality of this upper.

  • 4
    Upper receiver

    Published by B.Keller on 29th Nov 2022

    Key hole forge mark, no T marks on picatinny rail. All in all a solid upper, I have no complaints.

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