See the Washington 'infobox' or one of this section's referenced documents for the complete list as well as where exceptions apply for those who hold concealed pistol licenses.

To open-carry a loaded handgun in a vehicle (e.g, car, bus, etc ...) a person must have a valid concealed pistol license.

Law enforcement personnel may alert mental health professionals, who can determine if someone is a threat or needs involuntary treatment.

[16] On April 25, 2023, new gun restrictions were passed, including a ban on the sale, distribution, importation, and manufacturing of certain semi-automatic firearms classified as assault weapons.

[17][18][19] Washington concealed pistol licenses will be recognized in the following states, and concealed weapons licenses issued in the listed states will be recognized in Washington State, so long as the handgun is carried in accordance with Washington law: Idaho (Idaho Enhanced Permit only), Kansas, Louisiana, Michigan (non-resident concealed pistol licenses issued by Washington state are not recognized by Michigan), North Carolina, North Dakota (Class 1 North Dakota permits only), Ohio, Oklahoma, South Dakota (South Dakota Enhanced Permit only.

RCW 9.41.060, section 8: "Any person engaging in a lawful outdoor recreational activity such as hunting, fishing, camping, hiking, or horseback riding, only if, considering all of the attendant circumstances, including but not limited to whether the person has a valid hunting or fishing license, it is reasonable to conclude that the person is participating in lawful outdoor activities or is traveling to or from a legitimate outdoor recreation area.

[22] On January 31, 2019, the Washington Court of Appeals ruled that the mere possession of a handgun is not sufficient for conducting a Terry stop.