The first step is to contact the Property and Evidence Team in order to determine if the firearm is releasable. If the firearm is releasable, the Property and Evidence Team will send you a letter detailing the process.State of California Department of Justice page.
The process includes obtaining clearance through Department of Justice and registering the firearm. All firearms must be registered before they are released. You can complete the forms required by Department of Justice by contacting them. Once you obtain clearance and the firearm is registered, you must provide the Property and Evidence Team copies of the DOJ documents and call 707-543-3618 to set up an appointment for the release.