MAC-10 vs SIG MPX

1966–Present

2015–present

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

Unknown

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

425mm (16.7 in) stock folded, 610mm (24 in) extended

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

114-203mm (4.5-8 in) — multiple configurations

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

2.67 kg (5.9 lb) 4.5-inch barrel

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

10, 20, or 30 rounds — translucent polymer

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

Gas-operated, short-stroke piston, closed bolt — rifle-derived

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

Selective fire (safe, semi, full auto on military models)

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

Flip-up iron sights, full-length MIL-STD-1913 rail