Tactical Fidget Spinner v2 (Picatinny Rail Mount)

UPDATED 6-16-17: I added a square cutout in the bottom that should barely fit a 3mm nut. That should let you stick a bolt through, and with any luck this thing works.

This is unfinished, but I wanted to start posting what I had so far. I saw this: https://www.facebook.com/tacsoup/photos/a.1404615089785830.1073741828.1404603343120338/1923138477933486/?type=3&theater
and I couldn't resist trying to make one. I haven't figured out quite how to make it stay together (or removable) but the b