Kriss Vector vs SIG MPX

2009–present

2015–present

Unknown

Unknown

406mm (16 in) stock folded, 620mm (24.4 in) extended

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

140mm (5.5 in) SMG, 406mm (16 in) civilian carbine

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

2.7 kg (5.95 lb) .45 ACP, 2.5 kg (5.5 lb) 9mm

2.67 kg (5.9 lb) 4.5-inch barrel

13-30 rounds depending on caliber (Glock magazine compatible)

10, 20, or 30 rounds — translucent polymer

Delayed blowback, closed bolt — Super V recoil mitigation

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

Selective fire (safe, semi, 2-round burst, full auto on military models)

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

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

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