No Gun Signs
Relevant California Statutes
California DOJ Bureau of Firearms
May I carry a concealed firearm in California?
Generally you may not carry a concealed firearm on your person in public unless you have a valid Carry Concealed Weapon (CCW) license. CCW licenses are issued only by a California county sheriff to residents of the county, or the chief of police to residents of the city. California law does not honor or recognize CCW licenses issued outside this state. Source