Wow.
This concerns me as well as a former Californian. I didn't buy any guns for probably the last 15 or so years that I lived there, other than a Ruger LCR. Partly because I didn't want to be part of the newer tracking stuff, and partly because I don't buy neutered weapons.
I wonder how far back they will be going in the records, and if they'll be getting access to all the address forwarding information out there, which would affect the privacy of all of us who have fled.
Anyways, I bet the CalGuns server is heating up right about now.