Smoke ray gun? What the hell is a smoke ray and how could it work? We kids didn't trouble ourselves with such questions, we just ponied up our quarter and our corn flakes boxtop and waited for the postman to bring our guy. I think the "smoke" was just dust from a flour-like powder that got poofed out of the muzzle. I also remember my mother being very upset when I coated the arm of a couch with the powder.