Derringer Rider 4,5mm S.342

It is a .17 (4.3 mm) caliber pistol, featuring a three-inch (7.6 cm) brass barrel, a two-piece breech, a brass grip, wrapped in a silver plate finish. No serial numbers or barrel markings were printed on the pistols. Fewer than 40 original examples are known to exist today, including two prototypes and several larger model examples.

It is the smallest Remington Pistol ever made and was produced for only three years; the total estimated production quantity is less than two hundred. Not made for use with powder propellants, this diminutive sidearm launches 4.3 mm projectiles at surprisingly high velocities with the use of a percussion cap only.

On September 13, 1859, Joseph Rider was issued patent 25,470 for the Remington-Rider Pistol; this patent is commemorated by the gang stamp RIDER'S PT. SEPT 13, 1859 on the left side of the barrel. The frame, grips, and 3-inch barrel were integrally constructed of sand-cast brass. Some of the known examples have a natural bronze or silver-plated finish; a few are engraved. Only one is known to be rifled; this one is also the most profusely engraved, inscribed and dated and is probably unique.These little pistols were intended to be a parlor pistol and not a defensive weapon. They are designed for use with a percussion cap and lead shot, without gunpowder.