Electron Guns are a piece of advanced machinery which was known to Gyro Gearloose by 1975.
Description[]
Electron Guns are large cannon-like devices used to project electrons whereever one chooses. Hooking his Electrgon Gun up to spare parts from his Tele-Time Viewer, Gyro Gearloose once created a time machine which worked by turning the time-travelers into electrons and then catapulting them backwards in time through the Time Channel.
Behind the scenes[]
Gyro's Electron Gun is seen in the 1975 comic story The Deep Sea Deed.