Thought I would give an update on ultrasonic cleaning of 22lr suppressor. The suppressor had 750 rounds put through it since last cleaning. I soaked in CLR for 5 days then put in Ultrasonic cleaner for 45 minutes.
I am not sure it needed the full 45 minutes. This method is working quite nicely. I will need to do this to a center fire suppressor very soon to see the results.
NFA Firearms & Accessories