Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Strike Industries Multi-Function End Plate / Anti-Rotation Castle Nut
$36.95 $35.99
View Product
Compare (0)
Most Helpful Positive Review Excellent idea
Looked like a neat idea. Picked up one to try out on a build I wanted to swap a few tubes on. This was exactly what was called for. Easy to install, easy to swap tubes in and out. The little set screw was fiddly on the first installation, but has become easy to use after that. Already picked up a 2n...
Read More...
Most Helpful Negative Review Good idea but overengineered?
This seemed like a great idea until I got to installing it. The set screws are very fiddly, especially the one for the non-slip castle nut. It's very easy to cross thread it and if you get it in crooked and strip it the $35 back plate goes in the garbage. I'd rather throw a cheap, staked castle nut ...
Read More...
Show
Sort by
Filter by

need these for all my ar’s

by jwools, Verified Owner from UT, United States Written on May 19, 2026
This might be the best rear plate for the ar’s. Fit and finish is great and it looks just as good
Would recommend: Yes
Was it helpful to you? Yes | No

solid product does what says

by Matt, Verified Owner from VA, United States Written on April 9, 2026
Especially like the ability to lock everything in place and then put the detention spring in.
Would recommend: Yes
Was it helpful to you? Yes | No

Versatile and Pretty

by Jason, Verified Owner from OH, United States Written on April 3, 2026
I’m building a .300 BLK from the receiver up, and I really like this plate. Solid construction, looks nice, and it was easy to install. It’s nice knowing I can use multiple types of sling in a pinch.
Would recommend: Yes
Was it helpful to you? Yes | No

Great product

by Kindo, from AL, United States Written on April 2, 2026
Great product, works well will be buying again soon.
Pros:
  • Works as advertised
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

locking rear castle nit

by maz, Verified Owner from WI, United States Written on March 23, 2026
It looks and functions great very useful item to add to your ar15
Would recommend: Yes
Was it helpful to you? Yes | No

Easy install

by Strike industries endplate, Verified Owner from VA, United States Written on March 8, 2026
The endplate installed easily. I really liked the detent spring hole that is held in place with a screw.
Would recommend: Yes
Was it helpful to you? Yes | No

Great upgrade.

by Shik, Verified Owner from PA, United States Written on February 19, 2026
Easy access for pin spring replacement and locking nut without need for crimp/indent lock. Good quality, easy install.
Would recommend: Yes
Was it helpful to you? Yes | No

Great product!

by Pat, from FL, United States Written on October 17, 2025
Overall I think this is a great product, has a relatively low profile and a convenient place for a mount. I would however recommend being very very careful when tightening things down.
Would recommend: Yes
Was it helpful to you? Yes | No

Parts on the ar15 I needed to upgrade

by Tim, Verified Owner from MS, United States Written on July 26, 2025
Great products from this company, so far everything I've ordered has done it's job, highly recommended
Would recommend: Yes
Was it helpful to you? Yes | No

excellent replacement for the original parts

by Mark Zackery, Verified Owner from MA, United States Written on January 25, 2025
Easy to use and does stay in place, no need to stake it anymore and now you can attach any sling you want to it. Had it on my AR10 and worked great, will likely get another one for my AR15.
Would recommend: Yes
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?
Last updated 2025-11-12 UTC.