So if I move to CA now with a pistol and Magazines with more than a 10 round capacity, can I keep them? Thanks ahead of time.
You may not legally bring them into CA as complete magazines.
, under current law, take those mags apart and bring them in as 'parts kits', but may not legally re-assemble them inside CA. Again, under current law, you may also take those parts kits and block their capacity to 10 or fewer rounds; at that point you may assemble them in their new limited capacity and legally use them.
See also the Calguns Foundation Wiki article -- http://wiki.calgunsfoundation.org/Mo..._with_firearms