Bond Arms Derringer vs COP .357 Derringer

1995–present

1983–Present

Unknown

~150,000 estimated

140–180 mm

140 mm (5.5 in)

76–114 mm

63 mm (2.5 in)

450–600 g

0.5 kg (1.1 lb) empty

2-shot

4 rounds (integral barrel cluster)

break-action

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

SAO

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

Fixed

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