Upper Receiver Parts Kit | Right-Handed

(13 reviews) Write a Review

The upper parts kit includes everything you need to install the dust cover and forward assist onto a right-handed upper receiver.



  • C-clip
  • Ejection port cover
  • Ejection port cover roll pin
  • Ejection port cover spring
  • Forward Assist assembly
  • Forward Assist roll pin
  • Forward Assist spring

SKU: STAG300451


Q: Does Stag Arms have instructions or a video on how to install the kit?

A: We strongly recommend having a gunsmith install the upper parts kit to prevent damage during installation.


13 Reviews

  • 5
    As expected.

    Posted by Steve M. Potvin on 7th Jul 2021

    Not really sure what to say other than it's your basic Mil-Spec kit. It isn't any better or any worse than most others out there as they are the middle man, but the plus to purchasing from Stag Arms is that every part in tbe kit arrives well lubed, nicely packaged and of course their great service. Those for me are the important things when making a purchase.

  • 5
    Complete kit

    Posted by Astag Izgud on 7th Jul 2021

    Nice kit, everything was there. No issue with the finish, everything fit.

  • 5
    Upper parts kit

    Posted by Bernardo Bestard on 22nd Jun 2021

    excellent fit and finish.

  • 5
    Easy to install

    Posted by TRob ARob on 20th May 2021

    Was going to buy the complete upper, but wanted to give myself the challenge of putting it together myself without tools. Easily done.

  • 5
    Spare Parts

    Posted by Jorge Savoff on 4th May 2021

    I recently purchased a Stag Tactical 15, quality weapon, well built. I don't see having any issues with it, but decided to grab as many spare parts for it as I can. At least the ones I can get my hands on. Just in case I ever need to replace parts for wear and tear. I'll be grabbing more spares as they come back in stock. I'm sold on Stag Arms and what they have become, longterm customer from here on.

  • 5
    Great standard parts kit.

    Posted by Jason Ward on 3rd Apr 2021

    Great quality, standard mil spec kit. Great price

  • 5

    Posted by Gatorbyte on 17th Mar 2021

    Works and fits as they should.

  • 5
    Can’t beat Stag

    Posted by Anthony rotondo on 25th Feb 2021

    Love stag. I pick up their parts kits when I pick up lowers or uppers. Mil spec for just right

  • 5
    Cannot beat Stag

    Posted by Anthony rotondo on 25th Feb 2021

    Upper part kits fits perfect.