The 35 m/m, Aviation Mark I, pistol, firing a 35 m/m shell, is a single-barreled, single-action pistol, constructed of aluminum. It is used for signaling by means of colored lights-red, white, and green being the colors in general use.

ACTION

To load, release the barrel catch by pressing in on the botton underneath the frame, and tip the barrel up so as to open the breech. Insert a shell in the chamber and close the breech. To fire, draw the hammer to the rear as far as, possible and release it. The pistol may now be discharged by pulling the trigger. When firing the pistol from an airplane in the air,.great care should be taken to aim so that the charge will not be blownn back onto the tail, possibly setting fire to the machine. The pistol is held in the pilot's cockpit by means of two brass spring Clips, screwed to the side of the fuselage. The shells are held in a wooden rack.

These pistols have been used to good effect in setting fire to machines in case of forced landing in enemy country.