(a) Upon submission of firearm purchaser information, the Department of Justice 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, in order to determine if the purchaser is a person described in subdivision (a) of Section 27535, or is prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm.

(b) The Department of Justice shall participate in the National Instant Criminal Background Check System (NICS), as described in subsection (t) of Section 922 of Title 18 of the United States Code, and shall notify the dealer and the chief of the police department of the city or city and county in which the sale was made, or if the sale was made in a district in which there is no municipal police department, the sheriff of the county in which the sale was made, that the purchaser is a person prohibited from acquiring a firearm under federal law.

(c) If the department determines that the purchaser is prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm or is a person described in subdivision (a) of Section 27535, it shall immediately notify the dealer and the chief of the police department of the city or city and county in which the sale was made, or if the sale was made in a district in which there is no municipal police department, the sheriff of the county in which the sale was made, of that fact.

(d) If the department determines that the copies of the register submitted to it pursuant to subdivision (d) of Section 28210 contain any blank spaces or inaccurate, illegible, or incomplete information, preventing identification of the purchaser or the handgun or other firearm to be purchased, or if any fee required pursuant to Section 28225 is not submitted by the dealer in conjunction with submission of copies of the register, the department may notify the dealer of that fact. Upon notification by the department, the dealer shall submit corrected copies of the register to the department, or shall submit any fee required pursuant to Section 28225, or both, as appropriate and, if notification by the department is received by the dealer at any time prior to delivery of the firearm to be purchased, the dealer shall withhold delivery until the conclusion of the waiting period described in Sections 26815 and 27540.

(e) If the department determines that the information transmitted to it pursuant to Section 28215 contains inaccurate or incomplete information preventing identification of the purchaser or the handgun or other firearm to be purchased, or if the fee required pursuant to Section 28225 is not transmitted by the dealer in conjunction with transmission of the electronic or telephonic record, the department may notify the dealer of that fact. Upon notification by the department, the dealer shall transmit corrections to the record of electronic or telephonic transfer to the department, or shall transmit any fee required pursuant to Section 28225, or both, as appropriate, and if notification by the department is received by the dealer at any time prior to delivery of the firearm to be purchased, the dealer shall withhold delivery until the conclusion of the waiting period described in Sections 26815 and 27540.

(f) (1) (A) The department shall immediately notify the dealer to delay the transfer of the firearm to the purchaser if the records of the department, or the records available to the department in the National Instant Criminal Background Check System, indicate one of the following:

(i) The purchaser has been taken into custody and placed in a facility for mental health treatment or evaluation and may be a person described in Section 8100 or 8103 of the Welfare and Institutions Code and the department is unable to ascertain whether the purchaser is a person who is prohibited from possessing, receiving, owning, or purchasing a firearm, pursuant to Section 8100 or 8103 of the Welfare and Institutions Code, prior to the conclusion of the waiting period described in Sections 26815 and 27540.

(ii) The purchaser has been arrested for, or charged with, a crime that would make him or her, if convicted, a person who is prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm, and the department is unable to ascertain whether the purchaser was convicted of that offense prior to the conclusion of the waiting period described in Sections 26815 and 27540.

(iii) The purchaser may be a person described in subdivision (a) of Section 27535, and the department is unable to ascertain whether the purchaser, in fact, is a person described in subdivision (a) of Section 27535, prior to the conclusion of the waiting period described in Sections 26815 and 27540.

(B) The dealer shall provide the purchaser with information about the manner in which he or she may contact the department regarding the delay described in subparagraph (A).

(2) The department shall notify the purchaser by mail regarding the delay and explain the process by which the purchaser may obtain a copy of the criminal or mental health record the department has on file for the purchaser. Upon receipt of that criminal or mental health record, the purchaser shall report any inaccuracies or incompleteness to the department on an approved form.

(3) If the department ascertains the final disposition of the arrest or criminal charge, or the outcome of the mental health treatment or evaluation, or the purchaser’s eligibility to purchase a firearm, as described in paragraph (1), after the waiting period described in Sections 26815 and 27540, but within 30 days of the dealer’s original submission of the purchaser information to the department pursuant to this section, the department shall do the following:

(A) If the purchaser is not a person described in subdivision (a) of Section 27535, and is not prohibited by state or federal law, including, but not limited to, Section 8100 or 8103 of the Welfare and Institutions Code, from possessing, receiving, owning, or purchasing a firearm, the department shall immediately notify the dealer of that fact and the dealer may then immediately transfer the firearm to the purchaser, upon the dealer’s recording on the register or record of electronic transfer the date that the firearm is transferred, the dealer signing the register or record of electronic transfer indicating delivery of the firearm to that purchaser, and the purchaser signing the register or record of electronic transfer acknowledging the receipt of the firearm on the date that the firearm is delivered to him or her.

(B) If the purchaser is a person described in subdivision (a) of Section 27535, or is prohibited by state or federal law, including, but not limited to, Section 8100 or 8103 of the Welfare and Institutions Code, from possessing, receiving, owning, or purchasing a firearm, the department shall immediately notify the dealer and the chief of the police department in the city or city and county in which the sale was made, or if the sale was made in a district in which there is no municipal police department, the sheriff of the county in which the sale was made, of that fact in compliance with subdivision (c) of Section 28220.

(4) If the department is unable to ascertain the final disposition of the arrest or criminal charge, or the outcome of the mental health treatment or evaluation, or the purchaser’s eligibility to purchase a firearm, as described in paragraph (1), within 30 days of the dealer’s original submission of purchaser information to the department pursuant to this section, the department shall immediately notify the dealer and the dealer may then immediately transfer the firearm to the purchaser, upon the dealer’s recording on the register or record of electronic transfer the date that the firearm is transferred, the dealer signing the register or record of electronic transfer indicating delivery of the firearm to that purchaser, and the purchaser signing the register or record of electronic transfer acknowledging the receipt of the firearm on the date that the firearm is delivered to him or her.

(g) Commencing July 1, 2017, upon receipt of information demonstrating that a person is prohibited from possessing a firearm pursuant to federal or state law, the department shall submit the name, date of birth, and physical description of the person to the National Instant Criminal Background Check System Index, Denied Persons Files. The information provided shall remain privileged and confidential, and shall not be disclosed, except for the purpose of enforcing federal or state firearms laws.

(Amended November 8, 2016, by initiative Proposition 63, Sec. 5.1.)