Welcome to Commifornia or the Peoples Republic of California haha!
I just moved out, and the gun laws there are terrible!
You DO have to register handguns within 60 days, its a 19 dollar fee to do so, I am not sure if thats all or per gun.
Handgun can NOT have threaded barrel as it would then fall into Assault Weapon territory.
And there is no CCW in CA......at all, unless you have friends in very high places!