I have all the following, so other than an Ultra sonic, Birchwood Casey/Shooters Choice or commercial cleaning rags or the proverbial #2 pencil erasure. Are there other options to remove heavy buildup on stainless guns. Not worried about Blued metal, I'm aware of those concerns with Stainless cleaning cloths. I believe there was a similar thread on here once before, but I couldn't locate it.

