Indonesian Pop Pop Gun Boat - Sky Blue. Hand made. Featuring Moving Guns £6.50 Out of stock Indonesian Pop Pop Gun Boat - Sky Blue. (See video below) A hand-made tin model featuring moving guns. The back of the guns rest on the diaphragm engine causing a rapid up and down movement. Hand painted. Overall length - 18cm Comes complete with priming funnel and cotton wool oil burner Fuel Holder and Priming FunnelThese boats run using olive oil soaked into the cotton wool.