Oh, poo...
I have no idea about the laws specific to the Bay Area, whose ruling elite exist to prove that Stalin was ahead of his time.
I am not a lawyer, nor is anything you read here meant to stand in lieu of legal advice, nor should you interpret anything you read here as legal advice. Only your attorney can give you legal advice, and you should consult an attorney before interpreting anything here as anything other than absolute worthless lies.
In general, a California resident has many options available to him when considering a semiautomatic rifle for purchase, among them:
* Springfield Armory's M1A (semiautomatic in .308)
* Kel-Tec's SU-16CA (semiautomatic in .223)
* US Military's M1 Garand (semiautomatic in .30-06)
* US Military's M1 Carbine (semiautomatic in .30 carbine)
* SKS (semiatomatic in 7.62x39)
* RAA Saiga (semiautomatic in .223, 7.62x39, and .308)
* Remington Model 7400 (semiautomatic in .243, .270, .30-06, & .308)
* Remington Model 750 (semiautomatic in .243, .370, .30-06, & .308)
* Ruger Mini-14 (semiautomatic in .223)
* Ruger Mini-30 (semiautomatic in 7.62x39)
* Ruger Mini-6.8 (semiautomatic in 6.8mm REM SPC)
This is just what I could come up with in a few minutes, and fits the profile you seemed to be asking for - semiautomatic, centerfire caliber, and evil black features. This certainly isn't even a definitive list; there are probably dozens if not hundreds more. Best of luck to you...