I am not a CA resident. I'm not sure where that came from. I am a MA resident. Grandma has dual residency as she owns a house in both places. I agree there's no way she's even going to touch the guns. I'm opposed to flying out there as she'd be happy to see me anyway, so if the cost between flying out and shipping them myself is not much more than having an FFL go to the house then I'd rather do that. Not sure I would trust some random FFL to go there, especially when I'm not even sure what is out there.
I'm also a civilian employee of a police dept. Would it help if I can ship them here to the station care of the Chief of Police?
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correction: I'm not opposed
AFAIK there are only 3 ways for a Non-FFL to transport/ship handguns inter-state:
1. Ship using FEDEX/UPS overnight. I've never used either carrier but I believe I've read somewhere they now will only ship a handgun to an FFL in the destination state (I may be wrong on this).
2. Transport in your possession as checked baggage on an airline. I know some airlines limit the number of handguns they will allow to be checked.
3. Transport in your possession via auto.
I don't know about regulations for trains/busses
An FFL can use the USPS to ship handguns