That looks pretty nice. I don't think I've seen that one before and don't know who makes it. I've been thinking of getting something like this for one of my AKs. I hear that the triggers are generally terrible, but other than that detail they look pretty cool and would be very compact.
Regarding California legality, I think it would probably be legal - I don't think the last assault weapon law that bans pistol grips applies to .22 rimfires. Of course, you'd have to have already owned the 25 round mag shown in order to legally have it. I see that they still sell those cheesy looking .22s that are made to resemble ARs and AKs - so I don't see why this bullpup would be a problem. Let us know if you find out what it is and if they are available.
but how do you fire that thing? as in... where does your supporting hand go? Over your firing hand, like a pistol? I can't imagine you'ld be grabbing the barrel like that, and there's no forearm to speak of..
-K
(Kaylee, who has yet to "get it" when it comes to bullpups.. though that new HK OICW candidate looks mighty cool!)