I found a gadget at Think Geek that with some adaptation could replace the mouse for gaming. Yes, this one is still a mouse, but wait until you hear what I have planned for it. Why not simply make it into a gun-shaped mouse? The trigger finger could have two buttons; the trigger itself and another that is pressed instead of pulled. The three fingers could each have buttons with maybe clips to keep the fingertips in place. And lastly the thumb could definitely have a button and maybe a wheel.
Not only could it replace the mouse but also add a few new features. Maybe a quick flick to the left becomes a reload, although that may not work very well.
However there is definitely a downside and that is the psychological effect of holding a gun instead of using a mouse.I don’t feel violent when moving a mouse but I may if I hold a gun. Another problem may be tiredness. Holding you arm out for a few hours would certainly be difficult.
Of course somebody needs to build a few prototypes and test them to death. A few players may love them in which case publishers could make a new gun to resemble the one used in the game.
Assuming it’s not too realistic because that would be a problem. I can just imagine having a gun rack next to my PC with the different guns for each game. Of course the real scary thing is when they release a flak cannon or sniper rifle!