Long associated with Parisian street gangs called "Apaches" (after the American Indian tribe), there were two main patterns of combination knife/knuckle/firearm made in the mid/late 1800s in France. This one was designed by J. Delhaxhe, and features a solid frame set up as brass knuckles. The firearm part is a six-shot pinfire pepperbox cylinder of approximately 6mm caliber. There is also a short dagger that folds away against the backstrap of the frame. This pattern actually feels fairly solid in the hand - definitely moreso than the Dolne style of Apache combination weapon.