Ca. ban is unique to the state, it's also a tougher law in that it defines an "assault weapon" with only one "evil" feature beyond that of being able to accept a high capacity detachable magazine.
Under the Ca. AW ban, an AR15 that is in a post94 configuration under the Federal laws would still be banned here in Ca. A post 94 AR15, or post94 configured FAL, would be enough to get nailed under the Ca. AW ban.
It gets even stranger from there too. The AR15 and AK series guns are covered under the old 89 ban such that just the receiver is considered the "assault weapon" while other guns like the FAL or Robinson M96 are covered under the 99 AW ban and if the pistol grip is removed it will not be considered an "assault weapon."
Anyhow, the Ca. bans are around to stay. Those of us who do have registered Ca. "assault weapons" will be able to put the various features on them when the 94 AW ban sunsets, the Ca defining criteria are more stringent so that adding features to the already firearm does not change it's classification any.
Ca. is a pain in the ass for trying to bring a firearm into the state that it defines as being an assault weapon. If you are military they allow it but they pretty much tell you outright that it can't leave the base and you have to take it with you if you leave station here in the state.