Castle Nut

Compatible with Mil-Spec or commercial AR-15, M4, and M-16 carbine buffer tubes.

Made in USA

It is the responsibility of firearms dealers and private firearms owners to know and fully understand all federal, state, and local firearms laws in their area. Thordsen Customs LLC will not be held liable for any misuse of its products and will assume that our product(s) comply with state and local laws unless otherwise notified by authorities.