9mm handgun is usually louder than a shotgun: https://earinc.com/gunfire-noise-level-reference-chart/
> Thank the feds though, it's damn hard to get suppressors without tons of paperwork which would otherwise make this less of a problem.
Paperwork isn't that bad and online retailers help a lot. It's annoying, expensive, and you have to wait a long time after purchase to get it, but it's not really "hard" IMO.