The KRISS Vector is a submachine gun series produced by the American company KRISS USA. It is built around the KRISS Super V System, which reduces recoil and barrel elevation when firing the weapon, while offering a very high rate of fire.
The K10 is an upgraded prototype that was announced at SHOT Show 2011. It is slightly more compact than the standard Vector, and features a telescoping stock, a downward cocking handle, and was intended to be multi-caliber. The K10 has not been displayed by KRISS USA since SHOT Show 2013, and appears to have been canceled in favor of the second generation line of the Vector.