So I decided to clean my gun last night. It was my 300blk that had around 500 subs shot suppressed earlier that day they were aa1680 subs so extra dirty. Figured I would throw it in ultrasonic cleaner instead of scrubbing for 30min. Well I fell asleep so here is what happens if you leave a hard chrome bcg in an ultrasonic cleaner too long, I'm an idiot.