Already asked them John. Here was their reply (first) to my question (second):
You bring up a very good question of RCW 9.41.010 (7), that we can’t interpret for you. You may have to seek your own legal advice to your question.
DOL is the official record keeper and the initiative process requires the Secretary of State’s Office to “certify the results” of the election. Until then, the Firearms Program at Department of Licensing will continue with current record keeping requirements and processing of firearms forms.
Another avenue you may take is contacting the BATF (Bureau of Alcohol, Tobacco, Firearms and Explosives).
Can you please explain what exempts powder actuated nail guns from firearms regulations? Devices such as this:
are clearly "a device from which a projectile or projectiles may be fired by an explosive such as gunpowder."
and meet the definition of firearm in RCW 9.41.010.
When I-594 goes into effect, will a background check be required to transfer devices such as this?