COP .357 Derringer Stainless 4-Barrel, DAO, 3.25 inch, 4-Round
This COP .357 Derringer stands out for its four fixed barrels in a compact stainless-steel package, designed by Robert L. Hillberg and produced in limited quantities in the late 1970s–1980s. Built in Torrance, California, it fires .357 Magnum (and .38 Special per the rollmark) sequentially via a rotating striker and uses a tip-up, break-open barrel assembly for loading. Its micro size, durable stainless construction, and distinctive four-shot design make it a notable example of American derringer engineering.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor, superficial scratches and blemishes are present on exterior surfaces.
What's Included
- COP .357 Derringer pistol
The COP .357 Derringer uses a distinctive four-barrel layout arranged 2-over-2, delivering a total capacity of four rounds. A rotating striker fires one barrel per trigger pull in sequence, and the double-action-only mechanism keeps operation straightforward and consistent.
Its 3.25 inch barrels and micro overall size make it compact while retaining the strength of all-stainless-steel construction. The brushed stainless finish covers the frame, barrels, and receiver, paired with checkered wood grip panels for a secure hold.
Loading and unloading are handled by a tip-up, break-open barrel assembly actuated by a top-mounted sliding latch. Fixed sights include a shallow rear notch and an integral front blade for a simple, durable sight picture.
Markings include "COP INC. TORRANCE CALIF." and the caliber rollmark "CAL. 38SP / 357 MAG." Designed by Robert L. Hillberg and produced in limited quantities by COP Inc., with a brief continuation by American Derringer, this U.S.-made derringer represents a unique period of late 1970s–1980s American handgun design.