Heckler & Koch MP5 vs Kriss Vector

1966–Present

2009–present

~2,000,000 estimated

Unknown

680 mm (26.8 in) stock extended, 550 mm (21.7 in) stock retracted (MP5A3); Varies significantly depending on variant.

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

115 mm (4.5 in) standard, various lengths depending on variant (e.g., MP5K: 102 mm (4.0 in), MP5SD: 146 mm (5.7 in))

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

2.54 kg (5.6 lb) empty (MP5A3)

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

15, 30 rounds standard; 10, 20, and 40 round options available

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

Roller-delayed blowback, closed bolt

Delayed blowback, closed bolt — Super V recoil mitigation

Single-stage military trigger; SEF (Safe, Semi-automatic, Full-automatic) or Navy trigger groups available with burst-fire options

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

Rotary drum rear, hooded front post

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