Advanced Technology International’s AR-15 Pistol Buffer Tube Assembly fits most AR-15 and AR Variants, making it an essential upgrade for pistol builds. Constructed of Military Type III Anodized 6061 T6 Aluminum, it is virtually indestructible. This model features Mil-Spec tube diameter for proper fit to specified manufacturer’s range for the Sig Brace, ensuring compatibility with standard pistol braces.
The complete assembly includes an AR-15 pistol-length buffer tube, castle nut, end plate, buffer spring, recoil buffer, and padded tube cap-foam sleeve. Military diameter threads maximize fit into AR-15 receiver, and the assembly includes a steel military grade E-coated castle nut and locking ring. It is not compatible with AR-10 or .308 Rifles.
Manufactured in the USA with an ATI Lifetime Limited Warranty, this buffer tube assembly delivers military-grade durability and performance for your AR-15 pistol configuration. Whether you’re building from scratch or upgrading an existing platform, this Mil-Spec component provides the reliability and fit you need.
