DUE TO A HUGE INCREASE IN ORDERS - PLEASE EXPECT AT LEAST 10 DAYS BEFORE YOUR ORDER SHIPS, YOU WILL RECEIVE A TRACKING NUMBER ONCE WE GET YOUR ORDER OUT THE DOOR.
Mil-spec. receiver extension lock nut (castle nut) for use on AR-15 carbines with an adjustable stock. Perfect for your new build or as a direct replacement for worn out parts. Made in the USA.