Thank the Lord I don't fear my government the way you do on the Left Coast.
Even though it is a violation of the 2nd Amendment for them to legislate on the subject, I believe a substantial and considerable defense for my position comes from Title 18, Part I, Chapter 44, Â§ 922(a)(5)(A) and (B).
(a) It shall be unlawful -
(5) for any person (other than a licensed importer, licensed manufacturer, licensed dealer, or licensed collector) to transfer, sell, trade, give, transport, or deliver any firearm to any person (other than a licensed importer, licensed manufacturer, licensed dealer, or licensed collector) who the transferor knows or has reasonable cause to believe does not reside in (or if the person is a corporation or other business entity, does not maintain a place of business in) the State in which the transferor resides; except that this paragraph shall not apply to
(A) the transfer, transportation, or delivery of a firearm made to carry out a bequest* of a firearm to, or an acquisition by intestate succession of a firearm by, a person who is permitted to acquire or possess a firearm under the laws of the State of his residence, and
(B) the loan or rental of a firearm to any person for temporary use for lawful sporting purposes;* bequest, in this use is probably intended to infer inheritance or transference from an estate by will.
On the other hand, I could simply "visit" a friend and "forget" my firearm at his home. There would be no need to "test" these laws if the majority of the sheep in this country would wake up and realize that they have no Constitutional standing whatsoever.
I have no interest in Kommiefornia and, personally, would not be terribly put-off if the whole state slid into the ocean.
Be careful with that... I know some states (california come to mind) have laws that make receiving a gun from anyone other than an FFL illegal. Don't have a cite, I'm on a blackberry, sorry.