Sorry, the conversion can only be done from .40 or 357 sig to 9mm. If you buy the .40 you can shoot the 9mm or 357 sig for another $100 each. I dont know why anybody would buy a 9mm if they had this knowledge.

S&W makes this conversion so easy and cheap although they dont advertise it. I call them and they said it could not be done. After reading up here and watching youtube clips on it i ordered the 9mm barrel and could not be happier with it.