I think my uncle has one, I remember playing with a similar gun when I was little at Thanksgiving. My interest is stirring, I'll have to check.
Good ol' Greenie StikMCaps. I never had a gun that shot them, but They were sure fun. I stuck one on the face of grandpa's hammer. That weirded him out to no end. I could stick one on a thumbtack in the heel of my shoe. That went over real big at school.
I had one when I was a kid. Also had the Rifleman rifle along with the derringer belt buckle. I guess this gun addiction has been going on a while.