I have a natural DPMS SS lower with NO finish and was somewhat concerned about corrosion. This has not been the case; I just wipe it down with a rag and CLP and put it in the safe. So far, no problem, looks like new. The natural SS finish has some texture to it but is not rough at all. It took me awhile to get used to the looks of it but it does match the SS barrel on my Bulldog. The rifle is one heavy mother but a tack driver on the bench!