Mil-spec. receiver extension lock nut (castle nut) for use on AR15 carbines with an adjustable stock. Perfect for your new build or as a direct replacement for worn out parts. Made in the USA.
Add to Cart
The item has been added
On Sale!
Add to Cart
The item has been added
Aero Precision
Aero Precision| M4E1 Complete Lower Receiver w/Magpul MOE and STR - Black
Sale!
$324.95