Birchwood Casey UPPRVISE-BLOCK Vise Block for AR-15 Upper Receiver

Birchwood Casey UPPRVISE-BLOCK: Birchwood Casey AR-15 Upper Receiver Vise Block clamps in any vise allowing easy access for cleaning/assembly soft jaw design will not mark the receiver. It installs to upper receiver on standard AR-15 or equivalent rifles. Includes snap pins for secure engagement to the receiver. It allows the user to install and torque down the barrel to the receiver.