KRISS TDI-VECTOR

The TDI Vector series is a family of .45 ACP submachine guns developed by Transformational Defense Industries (TDI). They utilize asymmetrical recoil and in-line design to reduce recoil and muzzle climb.

Design

 

The Vector's patented action was originally designed by French engineer Renaud Kerbrat. This action, the so-called Kriss Super V, is an articulated mechanism which allows the block and bolt to recoil off-axis into a recess behind the weapon's magazine well. The Vector series are the first to use this action; the company claims the .45 ACP chambering was chosen to demonstrate that the action could "tame" such a powerful round.
The Vector's barrel is in line with the shooter's shoulder as in the M16 rifle and German FG42, but also in line with the shooter's hand as with many target pistols. Combined, these factors are claimed to reduce felt recoil and muzzle climb by eliminating the distance between the shooter's hand and the bore axis.

Variants

The selective fire variant is marketed as the Vector SMG, and features a 5.5 inch barrel. TDI also produces two semi-automatic versions of the Vector for sale in the US with the option of a fixed stock in states where a folding one would be prohibited. The semi-automatic carbine is called the Vector CRB/SO, with no confirmation on what the letters "CRB" stand for; they are presumed to mean "carbine." Similarly, the semi-automatic short-barrel version is labeled as Vector SBR/SO, presumed to stand for "Short BaRrel" or "Short Barrel Rifle."
TDI has announced that they also plan on adapting the system for higher-power cartridges in the future, with the company's website including plans for a 12-gauge shotgun called the MVS, and a .50 BMG heavy machine gun apparently now known as the "Disraptor" which is planned to use a double-sided, horizontal version of the Kriss mechanism.