Aero Precision AR-15 Carbine Buffer Kit - MIL-SPEC

Manufactured by Aero Precision
SKU: APRH100151
MPN: APRH100151
Manufactured by Aero Precision
11 Reviews

In Stock

Standard orders will ship out the same business day if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Aero Precision AR-15 Carbine Buffer Kit includes a MIL-SPEC diameter, 6-position receiver extension machined from 7075-T6 aluminum. A standard carbine recoil buffer, spring, end plate and castle nut are also included.

NOTE: Buttstock not included.

Weight: 9.8 oz
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BrandAero Precision
Buffer3.25 Carbine - Standard 3.00 oz
TypeStock Hardware Kit

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

11 reviews


Another Out of spec aero part

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Out of spec not happy with finish or fit at all. I don't know what's going on at aero lately

Never disappointed by Aero


Recommend works like it should I have two of these's kits for about two years with no problems.

Totally Disappointed


I've been a fan of Aero Precision stripped lowers and uppers and decided to get this kit for my new build thinking it since it's Aero it should be good. Not so. The finish on the tube both interior and exterior was really rough. Part of the threads got stripped from the end plate while I was torquing down the castle nut which caused the tube to rotate as I was torquing. I finally managed to assemble it straight but then found out when I put on my magpul stock that it can't fully collapse because the threads are oversized. I don't know if this one was not properly machined but I'll stick with only getting receivers made by Aero.

tighter fit


Ill have to agree but disagree with the other reviews. Ive used a dozen other brands tube kits and this one by far is the best fitting. Yes the finish is a more textured but its done well. Its the best fitting tube Ive used as there is literally no extra space and fits quite snug on a stock.


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Everything was as it should be. I was pleased with the fit and finish. Would recommend and buy again.

Like a charm!

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Worked great in my Aero Precision 223 Wylde Build. I used a 18 inch Ballistic Advantage Heavy Fluted SPR barrel with a rifle length gas system. I upgraded the buffer to the H2. everything works great!

My go to buffer tube

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I have used 4 of these kits so far without disappointment. For a good quality budget rifle they're perfect.

Same Two Part Numbers. Two Different Buffer Tubes. Bad Quality Control.

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I ordered two of these buffer kits and upon opening the packages, I found that both buffer tubes were machined differently. One seemed fairly standard with a protruding lip that holds down the spring and detent.
<br>The other had no lip and had awful machining marks on it. After checking the packages, both kits had the same part numbers. I installed both kits today and had to file down part of the poorly machined tube. After a lot of effort, I was able to get both kits installed correctly.
<br>I just don't understand how a company like Aero Precision can have such horrible quality control.
<br>From PA: We're sorry that you had this issue. We'd have been happy to swap out the bad one for you.

Missing castle nut

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Missing Castle nut and came with 2 end plates. QC not doing so well on my order.

Great product, good service

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Aero makes really good high quality products.