Hi GunGirl...
Welcome to the Police State. It's For The Children, so you should be glad ;-[
Sorry, you're toast as far as any AR, AK, or other on-list or "by-feature" (SB23) "assault weapon" goes.
Broadly, the last day to legally get an AW or hicap mag in Kalifornia was 12-31-99. There was a mad rush - saw people were lining up at The Traders buying 5 AR lowers at once, for example. I went nuts to on AR lowers and hicap mags of all flavors - even for guns I didn't have at the time (M1A, Beretta, etc.)
The 12 month window 1/1/00 - 12/31/00 was for registration of weapons, not acquisition of new ones. SB23 non-AR/AK AWs built up from receivers purchased under the radar during this 1 yr period may be legally questionable - they should've been in complete AW form 12/31/99 or before.
So, for newly purchased semiauto rifles in Kalifornia you're pretty much limited (approximately) to M1A, M1 Garand, M1 Carbine, Mini 14 & Mini 30, or Ruger PC9 or PC40 Carbines. A plain SKS with fixed 10 (or less) round magazine is OK as well. SKS with detachable mags or fixed hicap mags are a no-no.
You can get a FAL variant from Entreprise Arms but it can't have a pistol grip in CA (since that is an evil feature making it an AW) and you'd have to reattach grip outside of CA.
For all practical purposes, can't import hicap mags into CA (perhaps a very limited exception when part of AW brought in for a designated,
scheduled, formal, competitive shooting event).
Hicaps that you owned before 12/31/99 are grandfathered in for possession; no registration of mags is required.
Friendly advice: if you're really not tied to the area and are new here (i.e, no well-paying job, family ties, etc.) get back to AZ as fast as you can. Even if you make (numerically) more money here, the high state income tax + expensive real estate/rents mitigate the benefit of much of that "good pay".
We'd love to have you here and help us vote the bums outta office, but if you are new here and making a choice, get the hell out while you can (Can I come along? Please? Please? ;-)
Good luck,
-Bill
San Mateo, CA