This BCM AR-15 Total Reduce Receiver W/A5 BUFFER incorporates a BCM intermediate duration receiver extension in addition to a Vltor A5H0 buffer to supply some great benefits of the Vltor A5 buffer technique. The reduced receiver is machined from 7075-T6 aluminum forgings having a Mil-Spec hard coat anodized end https://a5-buffer-tube-kit91220.jts-blog.com/28175472/ar-15-comprehensive-reduced-receiver-w-a5-buffer-bcmgunfighter-inventory