Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube

3 reviews for Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube

1. 

   Patriot – May 29, 2018

   Bought this to use with the SBA3 pistol brace that I installed on my AR pistol build. Quality manufacturing of the castle nut made it a breeze to install. There are no sharp edges. Precision cut threads help to prevent galling. Plan on purchasing another one for my next build.

2. 

   C-H-A-East – July 27, 2018

   I received a castle nut from a friend and it had burrs. I definitely needed a replacement. I compared several on the site and ordered two different. This one worked perfectly for my needs. It matches what I have nicely, too.

3. 

   ChiroShooter – May 28, 2021

   Wrong color. I specifically hunted down a silver colored castle nut one to have a black/blued finish castle nut arrive. It took me several weeks to find a silver castle nut in stock. Very disappointed