How a KRISS Vector SMG Works

Wikipedia:
Type Submachine gun
Pistol caliber carbine
Place of origin United States
Production history
Designed 2006
Manufacturer Kriss USA, Inc.
Produced 2009–present
Variants See Variants
Specifications
Mass 6 lb (2.7 kg) (SMG, SBR)
7 lb (3.2 kg) (CRB)
Length 24.3 in (620 mm) (SMG, SBR)
16 in (410 mm) w/ stock folded
34.8 in (880 mm) (CRB)
26.5 in (670 mm) w/ stock folded
Barrel length 5.5 in (140 mm) (SMG, SBR, SDP)
6.5 in (170 mm) (Optional for SMG, SBR, SDP Gen II)
16 in (410 mm) (CRB)
18.6 in (470 mm) (CRB, Canadian version)
Cartridge
.22 LR
.357 SIG
.40 S&W
.45 ACP
9×19mm Parabellum
9×21mm
10mm Auto[1]
Action Delayed blowback, closed bolt
Rate of fire 1,200 rounds/min[2]
Effective firing range 55 yards (50 meters); 70 yards (64 meters) with 16-inch barrel
Feed system 9×19mm Parabellum: 10-, 17-, 19-, 33-round detachable Glock magazine or 40-round "MagEx2" extension
.45 ACP: 10-, 13-round detachable Glock magazine or ~25-round "MagEx 25+" extension,[3] 30-round "MagEx2" extension
Sights Flip-up iron sights and
MIL-STD-1913 rail provided for optics