Many modern handguns come with rails for mounting accessories, including lights. This object, patented by S.P. Cottrell & Son, is an early attempt to provide both illumination and protection. It's a .22-caliber 7-shot revolver built onto a heavy flashlight. The trigger is folded along the bottom.
Link -via Pocket Pistols, Historic Firearms & Curiosities | Photo: Gregg Martin Auctions