Cal. Penal Code § 27650

(a) The waiting period described in Section 27540 does not apply to the sale, delivery, or transfer of firearms made to any person who satisfies both of the following requirements: (1) The person is properly identified as a full-time paid peace officer, as defined in Chapter 4.5 (commencing with Section 830) of Title 3 of Part 2. (2) The officer’s employer has authorized the officer to carry firearms while in the performance of duties. (b) (1) Proper identification is defined as verifiable written certification from the head of the agency by which the purchaser or transferee is employed, identifying the purchaser or transferee as a peace officer who is authorized to carry firearms while in the performance of duties, and authorizing the purchase or transfer. (2) The certification shall be delivered to the dealer at the time of purchase or transfer and the purchaser or transferee shall identify himself or herself as the person authorized in the certification. (3) The dealer shall keep the certification with the record of sale. (4) On the date that the sale, delivery, or transfer is made, the dealer delivering the firearm shall transmit to the Department of Justice an electronic or telephonic report of the transaction as is indicated in Section 28160 or 28165.