California Code, Penal Code - PEN § 29182

(1) For each transaction, completes a firearms eligibility check pursuant to Section 28220 demonstrating that the applicant is not prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm.

(2) Presents proof of age and identity as specified in Section 16400demonstrating that person is 21 years of age or older.

(3) Provides a description of the firearm that the applicant owns or intends to manufacture or assemble, in a manner prescribed by the department.

(4) Has a valid firearm safety certificate.

(1) Based on a firearm eligibility check conducted pursuant to Section 28220, the department has determined that the applicant is prohibited by state or federal law from possessing, receiving, owning, or purchasing a firearm.

(2) Based on a firearm eligibility check conducted pursuant to Section 28220, the department is unable to ascertain the disposition of an arrest or criminal charge, is unable to ascertain the outcome of a mental health evaluation or treatment, or otherwise is unable to conclusively determine that the applicant is not ineligible.

(3) The applicant's description of the firearm that the applicant owns or intends to manufacture or assemble indicates that the firearm would be considered any of the following:

(d)(1) All applications received on or after January 1, 2024, shall be granted or denied within 90 calendar days after the receipt of the application by the department.

(2) Any application received before January 1, 2024, may be granted or denied within a period of time prescribed by the department.

(e)(1) This chapter does not authorize a person to manufacture, assemble, or possess a weapon prohibited under Section 16590, an assault weapon as defined in Section 30510 or 30515, a machinegun as defined in Section 16880, a .50 BMG rifle as defined in Section 30530, or a destructive device as defined in Section 16460.

(2) This chapter does not authorize a person to manufacture or assemble an unsafe handgun, as defined in Section 31910.