Legal Question in Criminal Law in Washington

If the victim was in a qualifying relationship, i.e. Domestic Violence category, and if there was ever a finding of guilty, there would be a firearm disability under Washington state law, despite the subsequent dismissal.

Federal law presents different issues, but generally, anyone convicted of or pleading guilty to assault 4 DV loses the right to possess firearms under federal law as well.

I agree with that analysis. But if it was a non-DV assault, or if the person was never convicted, then the charge won't carry a firearms prohibition.

If there was a DV no contact order at some point, that could cause a separate problem with firearms.