This BCM AR-15 Entire Lessen Receiver W/A5 BUFFER incorporates a BCM intermediate duration receiver extension in addition to a Vltor A5H0 buffer to supply the benefits of the Vltor A5 buffer system. The lessen receiver is machined from 7075-T6 aluminum forgings which has a Mil-Spec tricky coat anodized end https://a5-buffer-weight-chart99976.thelateblog.com/29239780/ar-fifteen-finish-reduced-receiver-w-a5-buffer-bcmgunfighter-inventory