Provides that a person who, while at a gun show or event, offers to sell or transfer a firearm to another person must be licensed as a dealer under 18 U.S.C. Sec. 923 and post the license in accordance with 27 C.F.R. Secs. 178.91 and 178.100(a).

Requires the licensed dealer to: (1) Perform a background check of the prospective transferee in accordance with RCW 9.41.090 and 18 U.S.C. Sec. 921 et seq.; and

(2) Obtain approval of a transfer from the local law enforcement agency for a handgun or the Federal Bureau of Investigation, national crime information center, for a long gun, in accordance with RCW 9.41.090 and 18 U.S.C. Sec. 921 et seq.

Declares that a violation of this act is a gross misdemeanor.