Glock 18 vs Glock 19

1986–Present

1988–Present

~250,000 estimated (including all variants)

10,000,000+ units (estimated)

204 mm (8.03 in) standard, 236 mm (9.29 in) on 18C model

186 mm (7.32 in)

102 mm (4.02 in) standard, 135 mm (5.31 in) on 18C model

102 mm (4.02 in)

625 g (1.38 lb) empty (standard), 730 g (1.61 lb) with 33‑round magazine

670 g (1.48 lb) empty, 850 g (1.87 lb) loaded (15‑round)

33 rounds standard, 50‑round drum, 10‑round compact magazines available

15 rounds standard; 10, 12, 17, 19, 24, 33, 45‑round options available

Short recoil, locked breech, striker‑fired Safe Action system

Short recoil, locked breech, striker‑fired; Safe Action trigger with trigger safety, firing pin safety, and drop safety

Safe Action striker‑fire with slide‑mounted fire selector (semi‑auto / fully‑auto)

Safe Action striker‑fire, consistent ~4.5 lb (2.0 kg) pull, single‑stage

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

Fixed polymer rear notch (3‑dot optional) and steel front blade; optional night sights (tritium or fiber‑optic) available