AT3(TM) Gray Cerakote Mil Spec AR-15 Buffer Tube

Mil-Spec AR-15 Carbine Buffer Tube Made 6061-T6 aluminum construction with a black anodized finish, with six precision-machined notches to securely lock your stock into position. This buffer tube has a mil-spec diameter for broad compatibility with all mil-spec stocks on the market. AT3 cannot warranty against Cerakote(TM) inconsistencies or the wearing of coatings over time. [...]