Pretty crude, but I built one some years back. Welded wing nut 'ears' on the Redfield screw, double checked where the screw was in tight, then rotated it 270 deg lefty loosey, marked it, ground it to clear the ring base so the base could be rotated away from the opposing screw to remove scope and ring assembly quickly with just 3/4 turn of the wing nut. For retaining zero, it worked as good as hokeyass Leupold QD's at 40 bucks a pop. But it didn't win any Better Homes and Guns awards for pretty either. I think a nice TIG weld would look pretty good. Which I didn't have.
