My old 1860 Army died recently and has been packed off to the great scrap heap in the sky. So I brought a 1858 New Model Army in stainless steel to replace it. it was a bit grubby around the nipples so I decided to give it a clean, but nothing in my arsenal of gun cleaning products would make a dent in the burnt on grime until I tried Cillit Bang and now those Little stainless nipples and their pockets look almost brand new. I wouldn't try it on a blued gun but for stainless it was amazing. You've got to wonder whats in that stuff!!