So I am about to purchase an ultrasonic for both this hobby and a couple others. I'm struggling on "size" now. I just called S&W to ask if there were any "no-no's" and the guy told me to NOT use ultrasonic cleaning except for maybe springs. Asked if that was specific to any lineup or model and he said no, across the board, even when using just water and a very mild detergent.
Now I'm disappointed