[Help]Rof change

I was wondering how to mod the rof on a gun i no it can be done because i have seen it.(light saber mod it increased the rof by alot and that was a rez edit NOT A HACK) so plz help me if any of u no how thinks

Change the model and if youre lucky the rof changes with it

sorta. Change the model to a faster firing gun and it should fire faster

If you change say an Semi auto (You have to click for it to fire. Not hold down) to a Full auto (Hold down to fire) does it change it from semi to auto?