- COP 357 Derringer
COP 357 Derringer
A COP 357 Derringer.
Production history Designer Robert Hillberg Designed 1983  Specifications Weight 1.75 lb (0.8 kg) empty. Length 5.6 inches (14.2 cm). Width 1.062 inches (2.7 cm) Height 4.1 inches (10.4 cm) Cartridge .357 Magnum (Can fire .38 Special as well) Barrels 4 Action Break-open with extractors for reloading, double action trigger with rotating firing pin selector.
It was manufactured by the now defunct COP Inc. of 3040 West Lomita Blvd., Torrance, California (COP stood for Compact Off-Duty Police).
Construction and operation of the COP 357
The C.O.P. 357 is quite robust in design and construction. It is made of solid stainless steel components. Cartridges are loaded into the four separate chambers by sliding a latch that "pops-up" the barrel for loading purposes, similar to top-break shotguns. Each of the four chambers has its own dedicated firing pin. It uses an internal hammer, which is activated by depressing the trigger to hit a ratcheting/rotating striker that in turn strikes one firing pin at a time. Older "pepperboxes" also used multiple barrels, but the barrels were the part that rotated. The COP 357 is unique in that it uses the ratcheting/rotating striker, which is completely internal, to fire each chamber in sequence.
Two frequent complaints about the COP 357 are that it is too heavy to be used as a backup gun, and that the trigger pull is too heavy for rapid fire—even heavier than most modern revolvers.
- Lancaster Pistol, another cartridge-firing break-action pepperbox used from the mid 19th century until World War I
- Heckler & Koch P11, a multi-barreled pistol that can be fired underwater
- COP 357 Derringer
- COP .357 Derringer photos
- Patent 4,400,900, covering the rotating firing pin selector
- User Manual
- Leon's Gun: Mother's Defender
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