Anderson Manufacturing AR-15 Buffer Tube Castle Nut

Manufactured by Anderson Manufacturing
SKU: AM-26
MPN: AM-26
Manufactured by Anderson Manufacturing
37 Reviews

In Stock

Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Anderson Manufacturing MIL-SPEC AR15 castle nut secures your carbine buffer tube to your AR-15 lower receiver.

Anderson Manufacturing builds rifles, pistols, and parts utilizing the latest in computerized manufacturing. By keeping manufacturing in house, Anderson can offer quality, American-made products at an affordable price, backed by a limited lifetime warranty.
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BrandAnderson Manufacturing
Manufacturer.Anderson Manufacturing
TypeCarbine Castle Nut

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

37 reviews


Well, it's a castle nut.


Not a thing wrong with it. It's well made and does it's job. Great, reliable shipping from PA, as usual!

Very good product.


Once again, an Anderson part that fits and functions as it should.

Good product


Product came as described and fit perfect.

Mil Spec


Replaced an ATI castle nut that did not have stake points.

Works as it should.


Simple part.... but a good one. Good price as well.

Anderson Mfg Castle Nut


Simply a castle nut. Does what it was designed for.

Easy and no-mar


Some cheaper castle nuts will allow the wrench to slip off, marring the surface. The nice square cuts in the castle nut prevent this and allow a clean, professional installation.

Great standard stuff


The castle nut works as I expected it to great price for standard stuff. Everyone seems to make ultra expensive simple items. The gun will sti shoot with a 3 dollar castle nut.

Mil-Spec Castle Nut


These are the real deal.

I am happy with my purchase.


This castle nut works. No need to get a more expensive one. I should have bought a few more because I would like to build another AR-15. My order shipped the next day.