Works great - VISM AR10 Upper Receiver Block

Of the limited options available for AR-10 vise blocks, this was one of the few that was in stock at the time. I bought it to try and it worked great. I used this on an AERO M5 upper and had no issues with binding or spacing. Handles the barrel nut torque with no issue, and came right back apart. I like that you're not only relying on the cross pins to hold it in place.