Phase5 Ar15 Pistol Buffer Tube Assy

The Phase 5 AR-15 Pistol Buffer Tube Assembly (PBT-CA) is a complete buffer tube system specifically engineered for AR pistol platforms. This assembly is designed to provide reliable performance in compact firearm builds where space and reliability are critical. It is ideal for operators, competitive shooters, and builders looking for a dependable solution for their AR-pattern pistols.

Constructed from billet aluminum, this assembly features precision machining to ensure consistent bolt carrier group cycling and effective recoil management. It includes a mil-spec carbine buffer, enhanced buffer spring, mil-spec end plate, and mil-spec castle nut. The assembly is finished with a black hard-coat anodize for corrosion resistance and a low-visibility appearance.

This buffer tube assembly is compatible with Sig Sauer pistol stabilizing braces and other industry-standard brace systems, making it a versatile upgrade for existing builds or a foundational component for new ones. By providing a matched, tested unit, it eliminates the need to source individual components, ensuring ease of installation and reliability for users.