[California] Listing and carrying a friend/relative's pistol?

I live in California. I have a CCW. My county let me put a Glock and an H&K that are registered to my mother, on my CCW. Apparently I can do that...Question is, can one pistol be on two people's CCW permits? For example: one pistol, my pistol, on my CCW and my girlfriend's CCW? Is that legal? via /r/CCW http://ift.tt/2esoXl1