Bravo Company MK2 Receiver Extension | Buffer Tube

Bravo Company MK2 Receiver Extension | Buffer Tube

The Bravo Company MK2 Receiver Extension is a precision-engineered buffer tube designed to enhance the performance and reliability of AR-15 platforms. Machined from 7075-T6 aluminum and finished with MIL-A-8625F Type III Class 2 hard coat anodizing, this receiver extension meets full mil-spec standards for strength, wear resistance, and durability in the harshest conditions.

This buffer tube features eight precision-machined length-of-pull adjustment positions to accommodate a variety of shooter preferences and body types. Its true mil-spec diameter ensures a snug fit with compatible stocks, eliminating the wobble seen in commercial-spec buffer tubes. Internal threading is precisely cut to guarantee proper alignment and reliable installation with your lower receiver.

Important Compatibility Note: The MK2 Receiver Extension is designed to be used exclusively with the BCM MK2 buffer and a rifle-length M16 action spring. Standard carbine buffers and springs are not compatible with this system and may cause damage to the firearm or injury to the operator. Additionally, due to the MK2’s longer length, some mil-spec stocks may not fully collapse all the way to the end plate. Most commonly used stocks will still function reliably, but users should be aware of this spacing difference when selecting a stock for tight or minimal overall length configurations.

The BCM MK2 Receiver Extension is an excellent upgrade for shooters who require enhanced reliability, smoother cycling, and recoil mitigation in duty-grade or competition builds. It is particularly well-suited for suppressed rifles or configurations running hotter loads that benefit from increased buffer mass.