Metal Polish

Not for cars, but hand guns. In particular, the leading edge of the cylinder of a revolver. Wondering what to use?? All of my revolvers have burned in powder residue and a small amount of lead also. I was told to use Fritz (?) at least I think that is what it was. A couple of them are titanium, and I am concerned with what any sort of abravise will do to it, or am I just being paranoid?? Anybody got any opinions or advice??? Would like to have them all cleaned up over the winter so I can take them and and scum them up again next spring:toothy10::toothy10: