...every SS guide rod I've ever owned from various manufacturers in various makes/models of guns, including a couple that were supposedly "heat treated" (Which I doubt they are. There's simply no reason to heat treat such an item.) look just like that after a few hundred rounds. As I said, it won't constantly wear like that, it will stop eventually. And it's nothing to the point that anything will gouge, nor will any shavings or shards come off the guide rod.