COP .357 Derringer vs Glock 17

1983–Present

1982–Present

~150,000 estimated

12,000,000+ units (estimated worldwide across all generations and variants)

140 mm (5.5 in)

204 mm (8.03 in)

63 mm (2.5 in)

114 mm (4.49 in)

0.5 kg (1.1 lb) empty

625 g (1.38 lb) empty, 905 g (1.99 lb) loaded

4 rounds (integral barrel cluster)

17 rounds standard; 19, 24, 31, 33, 45 round options available

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

Short recoil, locked breech, striker-fired with Safe Action trigger system (trigger safety, firing pin safety, drop safety)

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

Consistent ~2.5 kg (5.5 lb) pull, single‑stage Safe Action trigger

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

Fixed polymer front post, fixed polymer rear notch; optional tritium night sights or aftermarket rail‑mounted optics