California Code, Penal Code - PEN § 30005

(a) Upon entry into the Automated Criminal History System of a disposition for a conviction of any felony, a conviction for any firearms-prohibiting charge specified in Chapter 2 (commencing with Section 29800), a conviction for an offense described in Chapter 3 (commencing with Section 29900), a firearms prohibition pursuant to Section 8100 or 8103 of the Welfare and Institutions Code, or any firearms possession prohibition identified by the federal National Instant Criminal Background Check System, the Department of Justice shall determine if the subject has an entry in the Consolidated Firearms Information System indicating possession or ownership of a firearm on or after January 1, 1996, or an assault weapon registration, or a .50 BMG rifle registration.

(b) Upon an entry into any department automated information system that is used for the identification of persons who are prohibited by state or federal law from acquiring, owning, or possessing firearms, the department shall determine if the subject has an entry in the Consolidated Firearms Information System indicating ownership or possession of a firearm on or after January 1, 1996, or an assault weapon registration, or a .50 BMG rifle registration.

(c) If the department determines that, pursuant to subdivision (a) or (b), the subject has an entry in the Consolidated Firearms Information System indicating possession or ownership of a firearm on or after January 1, 1996, or an assault weapon registration, or a .50 BMG rifle registration, the following information shall be entered into the Prohibited Armed Persons File: