LBE Unlimited MBUF002 Mil-Spec 6-Position Buffer Tube Black AR-15

The LBE Unlimited MBUF002 is a mil-spec diameter, 6-position carbine buffer tube designed to replace a worn factory unit or serve as the foundation of a new AR-15 build. Machined to standard mil-spec dimensions, this tube drops directly onto any standard AR-15 lower receiver and accepts all collapsible stocks that require mil-spec diameter tubing. Finished in a durable black coating, the MBUF002 is made in the USA and built for dependable service on a working rifle.

The 6-position adjustment lets the shooter dial in length of pull for a comfortable cheek weld and proper eye alignment with iron sights or optics, whether running a compact carbine setup or a longer LOP configuration. That range of adjustability makes the tube a flexible choice across a wide variety of shooters and shooting positions, and it installs just like a factory tube using standard AR-15 lower parts.

Use the MBUF002 as a direct replacement for a damaged or worn-out factory carbine extension, or pair it with a mil-spec castle nut, endplate, carbine buffer, buffer spring, and collapsible stock to complete a fresh lower receiver assembly. As a true mil-spec diameter tube, it is compatible with the full range of mil-spec collapsible AR-15 stocks and is intended for use on AR-platform rifles chambered in calibers that run the standard carbine buffer system.