A first person shooter needs a lot of concentration from the player and then a normal keyboard often is just to cramped to really work.
But worry no more because now there is the Cyber Snipa Game Pad with it’s spacious layout it will really improve your game play.
Of course the 34 keys will help you a lot to 
Just hook it up to your USB and you are ready to start playing.
Go see the Cyber Snipa Game Pad