Just to add my .82 worth. The department of justice for the state of california required owners to register their AW by Dec 31, 2000. They estimate only 10% did. I registered four of my AW so I can, without any stress, go and shoot my evil looking rifles at any ranges. I must and do keep a copy of the letter I received from the dept of justice whenever I go shooting.
If you come from other states, you are just out of luck. However, their are alot of illegal AW owners, according to the dept of justice. You would be in good company. They can't prosecute everyone. state would go bankrupt. Whoops, they are going bankrupt!!!
Two things to note. The M1A can be purchased here legally. It is without flash suppressor and without bayonet lug. Great shooter. Also, some firm came up with an AR15 with the ability to load from the top into a permanently attached mag that is legal.
The person before me said it all. Life sucks in California for gun owners. They are making criminals out of good law abiding citizens.