Take a look at Penal Code sections 12025 and 12031. These are the least of what you are gambling with. You are asking for serious trouble from law enforcement and can wind up with a criminal record, in custody, faced with massive fines, and on probation that will circumscribe your life in ways you haven't yet thought through. There is no winking about the gun laws in L A County.
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The consequences of carrying a firearm under such circumstances are usually dependant on the jurisdiction one is in where one is found with such a firearm. If a person is carrying an unregistered hand gun in New York City, as a for instance, that person could be subject to a mandatory imprisonment of not less than one year. Based on the facts you have described, I highly recommend that you consult with local counsel in Los Angeles. You can find an attorney through the Los Angles bar association or the State Bar Association for California. Best of Luck!!!