This is going to sound wierd, but i have just installed a new skin for the p90. i tried to play with the gun in server, but it seamed as if the recoil was different and the fireing rate was different as well. i was just wondering if this was a side effect of the skin or if it was just all in my head.

your head.

Yeah... Model's cannot effect anything. The sounds and gun may LOOK/SOUND like they're going faster, but they're not. It would be cheating if that was possible, and also means your models aren't in time with the game and therefore fail.