Manufactured by KAK Industry
Manufactured by KAK Industry
6 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The KAK AR-15 MIL-SPEC Castle Nut is 100% made in the U.S.A. from hardened steel for the durability and strength you'd expect. The narrower staking cuts allow the end plate to be staked into the castle nut for a worry-free installation.
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BrandKAK Industry
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

6 reviews

  • 4 stars
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  • 1 star
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by -

Perfect fit and i love that it has three stakeing points.


by -

Great Quality, Extremely fast shipping and unparalleled customer service from PA. Thanks!

Good castle nut, but the finish could be better.

by -

Good castle nut overall, however the finish on the nut is less than ideal. It’s more a washed out black/dark gray than anything. Disappointed.

Poor Finish

by -

As someone else has already stated, the finish is poor, not what was expected.

Works Great


Great quality castle nut at a great price. I've probably used more than 20 of these over several years because they're quality nuts at a fair price and actually has staking notches for a proper install. Finish does tend to be a tiny bit inconsistent...but it's a castle nut...if it's to be an art piece, then beware...you can get yourself a fancy billet nut for 3x the cost and feel great when you show your fellow mall-ninjas how pretty your castle nut is...if you actually use your rifle as the tool that it is designed to be, then it won't matter to you.

Good Part


Nice milled notches for staking the end plate, typical castle nut finish. Way better than mil-spec.