Pretty much all you hear with good subsonic 22 lr and a suppressor out of a rifle is a firing pin strike and bullet impact, BUT all subsonic 22 ammo isn’t the same. CCI Quiet is quiet, but it’s also very inconsistent accuracy wise. RWS is quiet and extremely accurate.I have a .22 suppressor and some sub-sonic ammo I'm itching to try out. I saw a guy shooting one on YouTube and it really was whisper quiet but my .45 with a suppressor was none too quiet. They should really be called hearing protectors. It's just BS anyway, I have yet to read about a crime committed with a suppressor.