Private party rules less I have a permit
https://www.revisor.mn.gov/statutes/?id=624.7132#stat.624.7132.1:
624.7132 REPORT OF TRANSFER.
Subdivision 1.Required information. Except as provided in this section and section 624.7131, every person who agrees to transfer a pistol or semiautomatic military-style assault weapon shall report the following information in writing to the chief of police of the organized full-time police department of the municipality where the proposed transferee resides or to the appropriate county sheriff if there is no such local chief of police:
(1) the name, residence, telephone number, and driver's license number or nonqualification certificate number, if any, of the proposed transferee;
(2) the sex, date of birth, height, weight, and color of eyes, and distinguishing physical characteristics, if any, of the proposed transferee;
(3) a statement that the proposed transferee authorizes the release to the local police authority of commitment information about the proposed transferee maintained by the commissioner of human services, to the extent that the information relates to the proposed transferee's eligibility to possess a pistol or semiautomatic military-style assault weapon under section 624.713, subdivision 1;
(4) a statement by the proposed transferee that the transferee is not prohibited by section 624.713 from possessing a pistol or semiautomatic military-style assault weapon; and
(5) the address of the place of business of the transferor.