Yes, Printrep is correct. It is a very well documented California exemption that allows Californians to purchase a Legal firearm that is not on the Handgun Roster.
I'm not sure if everyone is familiar with the Handgun Roster, but it is an approved list of handguns which were selected not solely for their compliance with California's code as a legal weapon, but primarily because the gun manufacture payed a heavy fee to get them on the list. And as such a lot of guns don't make it on the list not because they are not safe, but because the manufacturer cannot afford, or chooses not to afford to bring them to the California market.
I have seen handguns which were approved on the roster as a stainless steel model, and found that the exact same gun in the blued finish was not approved on the list and therefore Illegal to purchase in California. So stainless steel guns are safer than Blued weapons I guess. =)
The whole thing is quite ridiculous, and every year the list will get smaller and smaller, especially with their new law which dictates any newly manufactured model of handgun, must be equipped with a laser inscribed firing pin which will imprint your serial number on the primer. Currently, I don't know any company that is doing this, and it is the reason we cannot get 4th gen Glocks, however the 3rd generation is fine. Haha..
What the Hell California... =)