Aero Precision AR-15/M4 Carbine Receiver Extension / Buffer Kit

SKU# 1891 | by Aero Precision
15   |  
Save 13%

The Aero Precision mil-spec AR-15/M4 carbine buffer tube kit and receiver extension is an all American made precision assembly. Built of premium 7075-T6 aluminum, it is stronger than kits made with cheaper 6061 aluminium. Built to last, this buffer tube kit is critical for new builds, and a great way to upgrade a gun. 

Every AR-15 needs a buffer tube kit and receiver extension, shouldn't you be buying an American made, true mil-spec one?

  • Six position 7075-T6 aluminum buffer tube
  • Three ounce carbine buffer
  • Buffer spring
  • End plate and lock nut
  • 100% American made!
  • Ready to install

About Aero Precision

Aero Precision is a premium AR-15 and parts manufacturer located in aerospace manufacturing hub of the Puget Sound. Years of expertise in building precision aircraft parts now allows Aero to be a leader in the small arms industry. 

Customer Reviews

Based on 15 reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Customer Photos
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Dylan K.
United States

Great parts

Good quality and holds up well

James Hodges

Aero let me down

My latest build is based on Aero Precision upper and lower receiver, Atlas S hand guard (I find fantastic) and buffer kit. I have always been pleased with Aero products until the buffer kit was inspected after noticing the spring hanging up. Thinking it might be the spring, I installed one from another rifle and the problem was still there. Looking inside the tube I could see deep machine marks and no evidence of dry lube. I am not sure if Aero Precision manufactures the tubes in house but this is the first time having a problem with there products. This experience gave me new thought into buffer tube quality and not to purchase based on price. Lesson learned and it only took 43; years. As for Ar15discounts, the shipping is very fast and prices are low, I will continue shopping with them.


Hey James. We are very sorry to hear that, as we don't typically have this kind of issue with these, but we do have a 100% satisfaction guarantee so we'd love to take care of this for you. Please reach out to our customer service team at or 1-855-556-2230 and we'll make this right.

Ron H.
United States

Well made is understatement!

I have through the last few years and by far this has been the best one I have ever used. I built with a Hogue stock and there is absolutely no play whatsoever. The coating is perfect along with the machining. I am more than pleased. This was my first order from AR15discounts and I as stated about how good the product is wait for your experience with this company, they are GREAT!! Staff is knowledgeable about their products if you need to talk with them, website works excellent, rapid notification of and shipping documentation, and the shipping totally amazes me. I live in the central US and I receive their shipments quicker than stuff I order local. Oh, and their prices are lowest around. GOOD JOB AR15DISCOUNTS!!!!!

Crucito B.
United States

Great Buffer Kit. Would Definately Buy Again

The item was nice and fit great with my Aero Precision upper. All the proper parts were included aswell.

Joseph F.
United States

Great Quality

Better construction than bare-bones models

You recently viewed

Clear recently viewed