MAC-10 vs Sten Mk II

1966–Present

1941–1945

~250,000 estimated (including U.S., Brazilian, and Asian licensed production)

Over 4,600,000

254 mm (10.0 in) with stock folded; 330 mm (13.0 in) with stock extended

762mm (30 in)

127 mm (5.0 in) for 9 mm version; 127 mm (5.0 in) for .45 ACP version

197mm (7.75 in)

2.5 kg (5.5 lb) empty, .45 ACP version; 2.3 kg (5.1 lb) empty, 9 mm version

2.95 kg (6.5 lb) empty, 3.7 kg (8.2 lb) loaded

30‑round box magazine standard; 20‑round (compact) and 40‑round (drum) options available

32 rounds — side-mounted (MP40-compatible design)

Straight‑blowback, open bolt, telescoping bolt with simple recoil spring; selective‑fire (semi‑auto and full‑auto)

Blowback, open bolt

Single‑stage mechanical trigger with manual safety lever; full‑auto fire only when selector set to "auto"

Selective fire (safe, semi, full auto — Mk II) or full auto only (some variants)

Fixed, low‑profile iron sights: simple blade front post and notch rear; optional aftermarket tritium night sights

Fixed front post, fixed peep rear — crude but functional