This BCM AR-15 Comprehensive Decreased Receiver W/A5 BUFFER incorporates a BCM intermediate size receiver extension in addition to a Vltor A5H0 buffer to provide the many benefits of the Vltor A5 buffer process. The reduce receiver is machined from 7075-T6 aluminum forgings which has a Mil-Spec tricky coat anodized https://a5-buffer-system-kit91395.isblog.net/ar-15-full-reduce-receiver-w-a5-buffer-bcmgunfighter-stock-45936361