The anodizing, well, that's what I think the finish is, started wearing off the first day I used mine. Photo is from this past Sunday after 200+ rds.
But, your's appears to be gouged slightly. The steel frame is going to wear the aluminum especially if fitment is tight or there is a burr. Triggers can be replaced and that would be a good time to smooth out the inside surface of frame where trigger contacts it causing the wear.
I don't know if it's worth returning because it may take weeks or months to get it back. I have no idea what the turn around time is with CZ/ Dan Wesson.
BTW, bimmerland, I've got a few bimmers down here, but they are all old models!