It looks to me like the player just wants "more of everything". I guess it can be done, but there is no way to validate the concept. Here is a little info about the VSK-94: "The VSK-94 was designed to accurately engage unarmored point targets at ranges up to 400 m"
The whole novel recoil system would have to be redesigned with different weights, buffers and springs. I guess you'd have to have several guns to work with.
How about just having special .45 ACP ammo made? Refit the gun with a stronger barrel, chamber and springs, and have stronger cartridges made to fire +++ rounds? Cheaper, easier, and more feasible.
On the other hand, it says on the document that the system could be accommodated to fit other calibers like 9mm Luger. It probably already exists.
http://www.kriss-tdi.com/products/te...-overview.html