Manufactured by KAK Industries
Manufactured by KAK Industries
5 Reviews
$1.99 $4.99

In Stock

Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination. Priority shipping methods like Overnight Delivery, Air Delivery, 2nd Day Delivery, or 3 Day delivery do not include Saturday or Sunday as delivery days.



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.
See More


BrandKAK Industry
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 www.p65warnings.ca.gov

Ratings & Reviews

5 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews


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.