Mich. Comp. Laws § 750.229: Pistols accepted in pawn, by second-hand dealer or junk dealer.

Sec. 229.

Any pawnbroker who shall accept a pistol in pawn, or any second-hand or junk dealer, as defined in Act No. 350 of the Public Acts of 1917, who shall accept a pistol and offer or display the same for resale, shall be guilty of a misdemeanor.