Art the smarter investors bought from the hedge funds that dumped off their gun related stocks after the Sandy Hook shooting. Gun company stocks nose dived for a week after that. I would have snapped up on them if I had the chance.
As for ammo it is still showing up on shelves. More stores are limiting purchases so more people can buy ammo.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.