I am not good with putting up pics and stuff, but if you go here and look towards the very bottom row of pictures, you get to see a decent look:
https://www.wilsoncombat.com/rob-hau...ecial-shotgun/
It's Rob's design/idea and I got to play with it last fall. Very nice and quick sight picture. I could see it being as close to a "universal" shotgun sight as you could get.