SodaPop, about the BEST you can do with your FAL is make it a Short Barrel Gun... That is only a $200 tax stamp to do
As far as making it Full-Auto What everyone else said, you need to be a Class II Manufacter... (FFL & SOT) Or Class III Dealer, and getting a Dealer Sample (you must have a LE Letter stating that they want a demo of a gun that you want to get) :barf: