The action also gets dirty. It's a fussy thing to take apart, and those screwheads on that big blank steel receiver are awfully easy to mar. Easiest way to clean the receiver is to first soak the receiver in solvent, then remove the barrel, and hose it out with spray brake cleaner, letting it wash all the old oil, solvent, grit, and brass chips (just watch!) out the barrel hole. Relube lightly, and you're good to go.