I want to let this group know that it is actually easy to buy an AR online and ship to a a legally. My brother lives in Sacramento, so I did some research and found a number of online dealers. The ship kits - lower to FFL, and upper to individual. Then my brothers local gun shop installed the Jugfernaut device I to the lower. When my bother out he upper an lower together, he had a lawful firearm in CA. All above board.
Just look for a dealer who ships I to CA and understand s and is registered with California DOJ. All lawful, and my brother has a great Geissele rifle now with the required modifications.