Washington Revised Code Title 9. Crimes and Punishments § 9.41.326. Untraceable firearms--Exceptions--Penalties

(a) Has been rendered permanently inoperable;

(b) Is an antique firearm, as defined in 18 U.S.C. Sec. 921(a)(16);

(c) Was manufactured before 1968; or

(d) Has been imprinted by a federal firearms dealer or other federal licensee authorized to provide marking services as provided for in RCW 9.41.328.

(5)(a) Any person who violates this section commits a civil infraction and shall be assessed a monetary penalty of $500.

(b) If a person previously has been found to have violated this section, then the person is guilty of a misdemeanor punishable under chapter 9A.20 RCW for each subsequent violation of this section.

(c) If a person previously has been found to have violated this section two or more times, then the person is guilty of a gross misdemeanor punishable under chapter 9A.20 RCW for each subsequent violation of this section.

(d) If a person violates this section by manufacturing, causing to be manufactured, assembling, causing to be assembled, possessing, transporting, receiving, selling, offering to sell, transferring, or purchasing three or more untraceable firearms at a time, then the person is guilty of a gross misdemeanor punishable under chapter 9A.20 RCW for each violation of this section.

(e) A person commits a separate violation of this section for each and every firearm to which this section applies.