The other night I was playing Call of Duty 4 and there was this guy playing that was clearly using a modified controller. He we shooting a G3 as if it were an AK-47 it was crazy!

So I did a little research and I found these two videos that show the power of the rapid fire as well as a tutorial on how to pretty much create one. There are several sites online that offer the controller in the price ranges of $59 – $89.