AR15 Carbine Buffer Tube: 6-Position Mil-Spec 7075-T6
The AR15 Carbine Buffer Tube is machined from 7075-T6 aluminum and finished with a thin film lubricant to support smooth spring, buffer, and carrier travel. As a 6-position mil-spec tube, it provides the mounting platform for a collapsible carbine stock or pistol brace, making it a common starting point for builders assembling an AR-15 lower receiver.
Because it follows mil-spec dimensions, it is intended to pair with mil-spec stocks and braces rather than commercial-diameter hardware. Complete the receiver extension with a matched AR15 carbine buffer and recoil spring, and confirm castle nut and end plate fitment during assembly.
Keep small parts on hand with a steel castle nut five pack, or browse related buffer parts to round out your build. Proudly made in the USA.