It is true that RCW 9.41.250 does say slung shot but RCW 9.24.025 is the chapter that describes weapon definitions and it says slingshot. Do you really want to take a chance on spending a night in jail and a few thousand dollars in attorneys fees for a judge to decide which definition is correct. If he decides against you the judge could strip you're right to possess a weapon. For that reason I don't plan on having one in my pocket or laying on the seat of my car. I also have a CCL and in this state I can carry A 45 in my back but I am not allowed to carry a pocket knife that can be Open by gravity or a flick of the wrist.
9.24.025 Dangerous weapons — Use, possession, concealing, sales, manufacture.
(a) It is unlawful for a person knowingly to:
(1) Manufacture, sell, possess, purchase or carry any instrument or weapon of the kind usually known as a blackjack, slingshot, sand-club, metal knuckles, chako sticks, nunchuka, throwing stars, clubs or other similar instruments which are designed or constructed to inflict bodily injury or property damage;
(2) Manufacture, sell, possess, purchase or carry any spring blade knife, balisong knife or any knife the blade of which is automatically released by a spring mechanism or other mechanical device, or any knife having a blade which opens, or falls, or is ejected into position by the force of gravity, or by an outward, downward, or centrifugal thrust or movement;
(3) Furtively carry with intent to conceal any dagger, dirk, pistol or other dangerous weapon; or
(4) Use any contrivance or device for suppressing the noise of any firearm.
(b) Exemptions. Subsection (a) shall not apply to the following:
(1) The possession of a nunchuka, throwing star or other martial arts weapon on the premises of a school which holds a business license and teaches the arts of self-defense;
(2) The manufacture of a nunchuka, throwing star, or other martial arts weapon for sale to, or the sale of a nunchuka, throwing star, or other martial arts weapon to a school which holds a business license and teaches the arts of self-defense;
(3) Use of batons or nunchukas authorized by the Redmond Police Department for use by law enforcement officers.
(c) Penalty. Any person who violates any of the provisions of this section is guilty of a gross misdemeanor, and upon conviction thereof shall be punished as provided in subsection 9.01.050(B) of this title. (Ord. 1968 § 1, 1998; Ord. 1791 § 1, 1994; Ord. 1524 § 2, 1989).
RCW 9.41.250
Dangerous weapons — Penalty.
(1) Every person who:
(a) Manufactures, sells, or disposes of or possesses any instrument or weapon of the kind usually known as slung shot, sand club, or metal knuckles, or spring blade knife;
(b) Furtively carries with intent to conceal any dagger, dirk, pistol, or other dangerous weapon; or
(c) Uses any contrivance or device for suppressing the noise of any firearm unless the suppressor is legally registered and possessed in accordance with federal law,
is guilty of a gross misdemeanor punishable under chapter 9A.20 RCW.
(2) "Spring blade knife" means any knife, including a prototype, model, or other sample, with a blade that is automatically released by a spring mechanism or other mechanical device, or any knife having a blade which opens, or falls, or is ejected into position by the force of gravity, or by an outward, downward, or centrifugal thrust or movement. A knife that contains a spring, detent, or other mechanism designed to create a bias toward closure of the blade and that requires physical exertion applied to the blade by hand, wrist, or arm to overcome the bias toward closure to assist in opening the knife is not a spring blade knife.
[2012 c 179 § 1; 2011 c 13 § 1; 2007 c 379 § 1; 1994 sp.s. c 7 § 424; 1959 c 143 § 1; 1957 c 93 § 1; 1909 c 249 § 265; 1886 p 81 § 1; Code 1881 § 929; RRS § 2517.]