This new round is scary even by Cali standards:
-- classify ALL semi auto centerfire rifles with detachable magazine as "assault weapons", which means no more rifles above 22 with detachable mags sold in Cali, period. Bill also requires registration of all existing such weapons with the state.
It was written to be a registry of all firearms and owners but was changed and I don't think a separate bill is out there for the complete registry, but I'm not 100%.
-- Ban of any magazine over 10 rounds, no grandfathering so all existing mags over 10 rounds to be confiscated. Also changes definitions so all the mags that were crimped to only allow 10 rounds but are long enough for more are also now "high capacity". if it could even theoretically hold more than 10 rounds, it's toast.
Your options to get rid of the mags are to: take them out of state, sell to a FFL, destroy it, surrender it to the state.
-- licensing of all ammo sellers, background checks of all ammo purchases
-- construct database to track all ammo purchases
The best part is all of these things are directed at guns that are the least dangerous of all the possible categories out there. I bet more people in Cali are killed every year by derringers than all semi auto rifles combined by a multiple.