KRISS (TDI Vector) Super V
Designed in 2006 and finally produced commercially in 2009, this unusual submachine gun turns the recoil of the bullet into a downwards direction by sliding a sprung weight behind the magazine. This reduces recoil backwards and barrel lift during full auto fire. Because of this it was first chambered in .45 ACP to demonstrate the effectiveness of the system, producing less recoil and lift than an MP5 firing 9mm despite a rate of fire of 1200 rounds per minute, compared with 900 rounds or less per minute for the MP5.
It uses standard Glock 13-round and 15-round magazines, as well as an extended 30 round one designed specifically for the Super V. There are several civilian semi-auto variants already available and their Swiss based company, KRISS Systems, has anounced upcoming 9mm and .22 versions.
The TDI Vector Super V system lends itself to control over larger rounds and its likely to influence the design of future weapons significantly. Possible versions from KRISS include a 12 guage shotgun, a .50 calibre heavy machine gun ("Disraptor") and pistols chambered in 9mm and .45 ACP ("KARD")
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