Glock 18 vs Shadow Systems DR920

1986–Present

2019–Present

~250,000 estimated (including all variants)

~100,000+ estimated (all variants combined)

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

203 mm (8.0 in) standard; 229 mm (9.0 in) with compensator

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

114 mm (4.5 in) standard; 137 mm (5.4 in) with compensator (DR920 Elite)

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

680 g (24.0 oz) empty, standard model; 765 g (27.0 oz) with compensator

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

17 rounds standard (flush fit); 19 and 33 round magazines available (Glock 17 compatible)

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

Striker-fired, semi-automatic, recoil-operated, Browning-type locking system

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

Flat-faced trigger with safety blade; 4.5–5.5 lb (2.0–2.5 kg) factory trigger pull; short reset

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

Steel suppressor-height tritium night sights (rear serrated, front with white dot); optic-ready slide cut (RMSc pattern)