It takes effect in 2011. Sacramento has had the law for quite awhile now. The police do check all purchases for felons, subjects guilty of domestic violence and other prohibitive crimes and on the strength of the purchase as it is illegal for these people to have a gun obtain a search warrant for guns. Many stolen guns have been recovered and arrests made Felons do go to prison for it. I will have my ammo dropshipped at my Bro in Laws in Reno as I will not pay retail for ammo.