California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 4158

(a) Notwithstanding any other law, an officer, employee, operator, lessee, or licensee of the 22nd District Agricultural Association, as defined in Section 3873, shall not contract for, authorize, or allow the sale of any firearm, ammunition, or firearm precursor part on the property or in the buildings that comprise the Del Mar Fairgrounds in the County of San Diego, the City of Del Mar, the City of San Diego, or any successor or additional property owned, leased, or otherwise occupied or operated by the district.

(b) For purposes of this section, the following terms have the following meanings:

(c) This section does not apply to a gun buyback event held by a law enforcement agency.