California Code, Penal Code - PEN § 27966

(a) The firearm is not a handgun.

(b) The firearm is a curio or relic, as defined in Section 478.11 of Title 27 of the Code of Federal Regulations, or its successor.

(c) The person receiving the firearm has a current certificate of eligibility issued pursuant to Section 26710.

(d) The person receiving the firearm is licensed as a collector pursuant to Chapter 44 of Title 18 of the United States Code and the regulations issued thereto.

(e) Within 30 days after taking possession of the firearm, the person to whom it is transferred shall submit to the Department of Justice, run up in a form and manner prescribed by the department, a report that includes information concerning the individual taking possession of the firearm, how title was obtained and from whom, and a description of the firearm in question.  The department shall provide the report form required by this section.  The department may request photographs of the firearm to determine if the firearm is a generally prohibited weapon, assault weapon, or machinegun, or is otherwise prohibited.

(f) Furnishing a fictitious name or address, knowingly furnishing any incorrect information, or knowingly omitting any information required to be provided for the form described in this section is punishable as a misdemeanor.

(g) The department shall establish a fee for submission of the report described in this section and an additional fee for each additional firearm.  This fee shall not exceed the reasonable and actual costs of processing the report submitted pursuant to this section.  The department may annually review and adjust this fee to fully fund, but not exceed, these costs.

(h) The department may request photographs of the firearm to determine if the firearm is a generally prohibited weapon, assault weapon, or machinegun, or is otherwise prohibited.

(i) Upon receipt of a report submitted pursuant to this section and any required fee, the department shall examine its records, as well as those records that it is authorized to request from the State Department of State Hospitals pursuant to Section 8104 of the Welfare and Institutions Code, and records available to the department in the National Instant Criminal Background Check System, to determine if the purchaser is prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm.