Phase 5 Weapon Systems PBTCA Pistol Buffer Tube Assembly 7.4" AR Pistol Platform Black Aluminum

The Phase 5 Weapon Systems PBTCA is a complete pistol buffer tube assembly purpose-built for the AR pistol platform. It is CNC-machined from 7075-T651 certified U.S.-made billet aluminum and finished in a hard-anodized Mil-Spec black for long-term durability under hard use.

At an overall length of 7.4" and an assembled weight of 11.3 oz, the PBT-CA accepts a standard Mil-Spec carbine buffer and spring, making it a direct drop-in replacement for the buffer tube on any AR-15 pistol or AR pistol-format lower. The assembly ships complete with the billet aluminum buffer tube, a foam pad constructed of ultra-durable nitrile rubber, plus a Mil-Spec end plate and castle nut, giving you everything needed to mount to a pistol lower right out of the box.