One noticeable feature is the upper jaw of the vise is spring loaded and as you release the tension on the four 3/4" hex nuts
The upper jaw rises approximately .150 away from the lower base jaw. A damn handy feature when you're assembling a newly blued barrel and action as it gives you an ample margin of clearance to install and remove these freshly blued components without requiring a third hand to prevent marring the parts in the procedure.
A selection of aluminum barrel shank bushings are available from Mr. Fisher in a variety of common barrel shank sizes. Or you can make your own from standard 2" Aluminum or Micarta round stock.
The cost of the vise is $575.00 which I think for a one time investment is not expensive at all over the length of ones career. Good tools demand a fair price and are made to last. I have little doubt this vise will be a good addition to the shop.