COP SS-1 Compact Off-Duty Police .357 Magnum/.38 Special Four-Barrel Stainless DAO Derringer, 3.25 in, 4-Round
This COP SS-1 Compact Off-Duty Police stands out for its unique four-barrel derringer design, all-stainless construction, and double-action-only, hammerless operation. Built in Torrance, California in the 1980s, it sequentially fires one chamber per trigger pull via a rotating striker and uses a tip-up/break-open action with a manual extractor. It accepts both .357 Magnum and .38 Special and includes its factory box and owner's manual.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: There are scattered scratches and minor blemishes on the brushed stainless surfaces. Very light rust formations are present inside the serrations. The grip panel medallion is detached from the grip; the loose medallion is included.
What's Included
- COP factory cardboard box
- COP SS-1 owner's manual
The SS-1 is a compact four-barrel derringer engineered to sequentially fire one chamber per trigger pull using a rotating striker. Its break-open, tip-up design with manual extractor makes loading and unloading straightforward. The action is double-action-only with a wide oval trigger, and the hammerless layout keeps the profile clean and snag-resistant.
Constructed entirely of stainless steel with a brushed finish, this model features a 3.25 in barrel cluster and a 4-round capacity. Unloaded weight is approximately 1.75 lb, giving it a solid, durable feel in a compact form factor.
Chambered for .357 Magnum and also accepting .38 Special, the SS-1 provides flexibility in ammunition choice. Sighting is simple and durable: a fixed front blade paired with a rear notch that is integrated into the top latch.
Markings reflect original COP Inc. manufacture in Torrance, California, U.S.A., with caliber designation on the gun. As an all-stainless, 1980s-era piece with distinctive engineering, it has strong collectible appeal, especially with the included original box and manual.




