Last Chance Revolution Vise 1601591 Black/Silver. The AR15 Head mounts directly into the magwell of any AR15 model and allows you to work efficiently on your AR. Note: to use this head you must already have the Revolution Vise. Specifications for Last Chance Revolution Vise 1601591: Manufacturer: Last Chance Color: Silver Black Features of Last Chance Last Chance Revolution Vise: Durable Strong Versatile Adjust your AR15 into multiple positions Fits any AR15 magwell Package Contents: Last Chance Last Chance Revolution Vise Last Chance VAH1001: Revolution Vise 1601591 Black/Silver