Oregon Revised Statutes Crimes and Punishments § 166.427

(1) Whenever a person engaged in the business, as defined in 18 U.S.C. 921, of selling, leasing or otherwise transferring a firearm, whether the person is a retail dealer, pawnbroker or otherwise, buys or accepts in trade, a used firearm, the person shall enter in a register the time, date and place of purchase or trade, the name of the person selling or trading the firearm, the number of the identification documentation presented by the person and the make, model and manufacturer's number of the firearm. The register shall be obtained from and furnished by the Department of State Police to the dealer on application at cost.

(2) The duplicate sheet of the register shall, on the day of purchase or trade, be hand delivered or mailed to the local law enforcement authority.

(3) Violation of this section by any person engaged in the business of selling, leasing or otherwise transferring a firearm is a Class C misdemeanor.