American Derringer Model 1 vs COP .357 Derringer

1985–present

1983–Present

Unknown

~150,000 estimated

6 in

140 mm (5.5 in)

3.5 in

63 mm (2.5 in)

15 oz

0.5 kg (1.1 lb) empty

2

4 rounds (integral barrel cluster)

Single-action derringer

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

Single-action

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

Fixed front

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