CCI Quiet subsonics will not cycle any semi auto.
CCI Semi Quiets cycle both my Ruger MK IV and T/CR semi auto with suppressor on and are stupid quiet. Bolt drop and impact is what you hear.
I’ve never been able to get any accuracy out of the cci quiet. And honestly I don’t think it’s that much more quiet than the just the regular cci subsonic. Plus the regular cci subsonic cycles... in at least everything I’ve shot it out of. Mk4 Ruger, ar pistol with cmmg 22lr conversion, and knockoff 22lr mp5.