The bead blasted stainless steel nose of my 1911 is so "purdy", that I'll go crazy if it's tarnished by dust or smoke. I clean it regularly.
Other than that, anytime something gets in the middle of metal to metal contact, it does wear. I tend to keep guns cleaner than not.
Other than that, anytime something gets in the middle of metal to metal contact, it does wear. I tend to keep guns cleaner than not.