All the data that Jocelyn Moore claims that was released by the FBI and brought out by “Every Town for Gun Safety” (never heard of this one) is just another organization’s opinion. There are dozens and dozens of organizations out there and what is interesting is that none of them can come up with the same numbers. So do your due diligence and choose the organization with the numbers you like.
I do not personally know of any law-abiding firearms owner who is opposed to background checks. The are two major problems with I-594:
1) The measure will also criminalize, with few exceptions, all temporary transfers of possession of firearms that do not involve purchases, such as for safekeeping, hunt, loan, recreational sharing, safety training, coaching, transport, etc.
2) One of the debates that exist is whether I-594 would create a registry of guns and WACOPS holds that if it does not, the background check is useless for enforcement - and that if it does, it is an infringement on the privacy rights of gun owners.
The largest law enforcement organization in the state, the Washington Association of Police and Sheriffs, opposes the initiative.