A3 RH Flattop Upper Receiver Assembly

(6 reviews) Write a Review

The A3 upper receiver assembly is made to mil-spec standards and includes a picatinny rail on the top, dust cover, and installed forward assist.



Pivot/Takedown Pin Size: Small pin - .250"

Material: Forged and mil-spec with type 3 hard coat anodizing and a picatinny rail on top

SKU: STAG300412



Q: Are the bolt carrier and charging handle included?

A: The bolt carrier and charging handle are sold separately.


6 Reviews

  • 5
    Everything I needed plus more.

    Posted by Cody Cichosz on 14th Apr 2021

    I was hesitant to purchase this at first as I did not see anything regarding M4 feed ramps. I am glad I got this because it did have feed ramps and plus the rail is T marked. Fits well with my DPMS lower and barrel.

  • 5
    Stag complete upper

    Posted by Matthew Miokovic on 11th Apr 2021

    This is one of the nicest uppers I have used as part of a build. Everything mated up perfectly! I will definitely use Stag uppers in the future for builds.

  • 5
    Excellent product

    Posted by Joshua Pettengill on 8th Apr 2021

    Fit perfectly functions even better I will be purchasing more in the future

  • 5
    Looks great

    Posted by Jon Calley on 7th Apr 2021

    Ready to get the rest of my build just waiting on stag

  • 5
    A3 Flattop I would Recommend

    Posted by Jeffrey on 30th Mar 2021

    The quality is Excellent ,Barrel fit is Tight which
    is what I was Hoping for I shoot XTC NRA

  • 5
    A3 Upper

    Posted by Anthony Z on 13th Jan 2021

    Fit and finish are mil spec and worked great with my build. Fits well with my Aero lower.