See this WWII Nazi gun belt buckle. It fires three, .22 caliber bullets out of the belt buckle. This was made for the Nazi SS in charge of guarding Hitler.
Also, there is the American Liberator pistol designed to shoot one, .45 caliber bullet each time it was fired. They were thrown out of the airplanes in cardboard boxes with 10 rounds and instructions on how to operate it in a variety of countries.
This is very interesting stuff! If you would like to see more items like this we do one tour a week at 10am on Sundays through Nov. 11th. Any questions give us a call at (719) 683-2200.