Um.....basically, yes (I think), you would have to somehow prove that you owned the mags prior to July 1. How would you do that? Ask the Dems, this was there idea....none of us really know. The burden of proof would be on the state to somehow prove that you violated the ban....which is why nearly all of our county sheriffs say this is an unenforceable law. I seriously doubt that a lot of enforcement is going to take place on this (sort've like the 1000' GFSZ) but only time will tell....and it may yet get overturned by the courts, lawsuits are already being prepared.