Basically what the AG is stating is that he wants to layer Even More new state laws on top of already existing Federal laws which will do nothing at all. Already, that is what the State's background system is. When you buy a hand gun in Washington, you have to fill out a Federal ATF 4473 paperwork and pass a (NICS) FBI BackGround check. Then as soon as you do that, you fill out what is basically the same paperwork for the State that does the same background check. Yes its that stupid!
You can regulate guns all you want but it will do nothing to curb the mental health issues in Washington State. 
Such a fake concern by Ferguson and Inslee. State mental hospitals alone have been in panic crisis mode ever since Inslee was elected and he's done very little to nothing to address something he could actually affect. You cannot legislate away suicide, and its not a gun issue.