Complete carbine receiver extension kit for AR-15 builds. Includes 6-position mil-spec buffer tube, carbine buffer assembly, and action spring.
This is the essential component for completing your AR-15 lower receiver assembly. The CMMG Receiver Extension Kit provides everything needed to finish your build with quality mil-spec components.
Whether you're building your first AR-15 or completing a lower receiver that's been waiting for the right parts, this kit streamlines the process. The carbine-length configuration is the standard for most modern AR-15 rifles, offering a balance of handling and performance.
Combine this receiver extension kit with your choice of lower parts kit and buttstock to complete your lower group. The mil-spec design ensures compatibility with standard AR-15 components and aftermarket accessories.
CMMG manufactures this kit to mil-spec standards, ensuring reliable function and durability. The components work together as a system to manage recoil and cycling properly.