This is a civilian legal short barrel rifle (SBR).
The KRISS Vector Gen II features the Super V Recoil Mitigation System, which eliminates felt recoil by 60% and muzzle climb by 95% when compared to traditional operating systems. The new Gen II is more ergonomic with a redesigned trigger, a short throw ambidextrous safety lever, and a more comfortable pistol grip. Changing between calibers can be done in seconds, without any tools.
Package standard equipment includes a fixed Kriss M4 style stock (not pictured), top/bottom Picatinny Rails, ambidextrous F/S controls, MagPul MBUS sights, foregrip, cable lock and one Glock 17 17-round magazine.
The KRISS Vector has a 5.5" threaded 1/2x28 barrel, accepting suppressors easily.