Most people say that these legal challenges are too little, too late, but with the recent appointment of a conservative Supreme Court judge, there is a chance of a legal victory eventually. The problem is that the issue would have to move through several layers of lower courts before it would reach the Supreme Court and that could take years. In the meantime, owners of high-capacity magazines would be in some kind of legal limbo unless a state judge issues some kind of order delaying enactment of the high-capacity ban.
By banning possession—in addition to sales and use—of magazines that were lawfully acquired and are presently lawfully possessed, Section 32310 constitutes a physical appropriation of property without just compensation that is per se unconstitutional.
LINK: http://lawnewz.com/high-profile/lawsuit-overturn-ban-on-high-capacity-magazines/