Some clowns in WA filed a FIOA request to get the names and addresses of people who turned in bump stocks so that they could build a map of it.
Full article:
https://www.ammoland.com/2019/04/washington-state-foia-request-bump-stock-turn-in-dox-gun-owners/
Full article:
https://www.ammoland.com/2019/04/washington-state-foia-request-bump-stock-turn-in-dox-gun-owners/