Today i was giving my cz semi auto it's birthday treat. I had a look in the trigger mechanism assembly. it was filthy. I didn't fancy taking it all to pieces to clean.... i was doing a bit of reloading aswell seo i put the whole lot in the ultra sonic cleaner.
it made it lovely and clean. and it removed all of the blacking. so it now is bare metal, shiny and exposed.
It's going to rust like crazy.