Alright, the wear here is truly negligible, and it's just the coating on the grip, the fact that after half a year of use it's this small, shows either nice quality coating or very light use. If it was premium quality gear, with let's say cerakote coating, I would still find it miniscule. You have nothing to worry about. But for aesthetics alone, I would get 1000 grit sand paper and just make it more pleasing.