[smurfsdad]

I've come upon an old Mossberg Model 46b-b that is pretty rusty and dirty.
I've got the stock off to clean and finish. I've cleaned most of the metal pretty well but have a few areas that I'd just as soon not take apart fearing that I'd screw something up. Mainly the trigger and bolt action areas. These places are not rusty, but are dirty and may have bits of steel wool in them. Can you guys recommend any solvent spray to use in order to flush these areas clean?
Thanks for your time