My brother wanted me to ship him some mags, I said no. I didn't want to visit him in prison. I don't think the FBI would get involved as it is another California law and not a federal law. I could be wrong though.You need to be careful what you ship and to where. A few years ago a buddy shipped some mags from TX to his Dad in CA. Next thing he knows the FBI was knocking at his door. Finally decided he was just mistaken and not a criminal.