Tapco TAP22057: Upgrade your AR-15 rifle with the Tapco 6-Position Carbine Buffer Tube, meticulously designed to enhance versatility and durability. Finished with a sleek anodized black coating, this buffer tube not only adds a professional touch to firearms but also provides enhanced corrosion resistance for long-lasting performance. With a Mil-Spec diameter, this buffer tube ensures compatibility with a wide range of collapsible stocks, allowing for easy customization to suit your preferences.