I took couple pics but my camera just would not show the detail well enough. The blade expands down to a platform that matches the size of the part of the ramp it sits on. I'm wondering if the blade part has a stud/post that rotates into a slot like scope base/ring?
Tried to remove the one screw, but couldn't break it by hand, and it was starting to disfigure the slot like it was kinda soft metal. Not worth messing it up. Maybe get to a smith shop sometime. Thanks everybody.