https://www.seattletimes.com/seattle-news/politics/wa-bans-sale-of-ar-15s-and-other-semiautomatic-rifles-effective-immediately/

WA bans sale of AR-15s and other semi-automatic rifles, effective immediately

>The ban, which makes violations a gross misdemeanor, applies only to new sales, not to firearms people already own. The law also exempts people who inherit guns that are subject to the ban. It also allows sales by licensed firearm dealers to law enforcement agencies and the military.

The bill included an emergency clause making it take effect immediately upon Inslee’s signature, which came just before 11 a.m.