put in a some liquid brass polish into the tumbler. I use a product called "FLITZ". a few drips in the tumbler before turning it on. The brass comes out shiny like new jewelry.
I find the tumbler gets them shiny, but the ultra sonic gets them clean.
SO you can put your pistols in an ultra sonic cleaner KEWL, do you have to break anything down or just open the action and drop em in ... works good for chrome revolvers and double stacks as well?