 The law was amended in 1999 to restrict acquisition and transfer of magazines that could hold more than 10 rounds of ammunition.Firearms and magazines that were legally owned at the time the law was passed were grandfathered in if they were registered with the California Department of Justice DOJ.The co-author of the legislation, California State Senate President "pro tem" David Roberti, found himself the subject of a recall attempt by the gun lobby in 1994.