Current California law on who is prohibited from owning a firearm. Let's see how many this punk violated and how the DUmp monkeys would have changed it by adding or rewording it so that it would have prevented this tragedy.
I highlighted my guess.
Who is prohibited from owning or possessing firearms?
Any person who has a conviction for any misdemeanor listed in Penal Code section 29805 or for any felony, or is addicted to the use of any narcotic drug, or has been held involuntarily as a danger to self or others pursuant to Welfare and Institutions Code section 8103 is prohibited from buying, owning, or possessing firearms or ammunition. There are also prohibitions based on mental conditions, domestic restraining/protective orders, conditions of probation, and specific offenses committed as a juvenile. A list of prohibited categories is available on the Bureau of Firearms website.
(Pen. Code, §§ 29800, 29805, 29815, 29820, 29825, 29855, 29860, 29900, 29905, 30305; Welf. & Inst. Code, §§ 8100-8103; 18 U.S.C. § 922, subd. (g), 27 C.F.R. § 478.22.)