American Derringer M-1 vs COP .357 Derringer

1980–present

1983–Present

~150,000 estimated

140 mm (5.5 in)

63 mm (2.5 in)

0.5 kg (1.1 lb) empty

4 rounds (integral barrel cluster)

Double‑action only; four independent hammers cocked sequentially by a single trigger pull

Heavy double‑action trigger with a long pull, no single‑action mode

None; optional low‑profile notch milled into the top of the frame for limited aiming