This BCM AR-fifteen Complete Reduced Receiver W/A5 BUFFER incorporates a BCM intermediate length receiver extension as well as 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 hard coat anodized end https://arthurehgfd.blogunteer.com/28165541/ar-15-total-lessen-receiver-w-a5-buffer-bcmgunfighter-stock