When you pull the trigger a small shower of sparks sparkles out. They used to have stamped metal toy tanks that the sparks would come out the barrel, toy firetrucks that the sparks would come out the back, rocket ships, etc; A small wheel rubbed against piece of pyrite. Made in Japan at a time when Made in Japan meant Junk made in Japan. Made in the late 40's and 50's. Things sure have changed , haven't they.