O.K. I know this is an often asked question. But here we go. Awhile back I bought a CPO SIG 229R 9mm. It's been a great gun. I don't know how many rounds I have through it. I always use a good gun grease on the rails and barrel. The frame rails on both sides are a bright silver. The barrel itself looks like it is stainless. All the black finish is gone. As I said I keep the gun cleaned and lubed. never had a problem. But thinking about the barrel the other day being silver made me wonder. Should I be concened? It rattles, it's got silver frame rails, silver barrel, but still is totally rliable and very accurate. So what do you think? Sorry can't post pic's right now.