Muss,
You asked, so here is my thought. I'm accepting your report at face value of the condition of this handgun. The brand makes absolutely no difference to me and it shouldn't to anyone. Ultimately, it's the manufacture who holds the warranty, but if I were you, and you are indeed friendly with that LGS, I'd tote it right back in there and tell them this is what you found when you got it home and looked at it in good light. Then I'd see what the LGS has to say about it. If you can't find satisfaction there, then I'd probably get in touch with the manufacturer forthwith. I'd also like to know if there are any other signs at all of usuage or firing (beyond factory). If indeed your copy left the factory in that condition, then a pox on the factory for letting it out the door lookin like that.
I will say that the gurl I've been married to for almost 50 years had a mark or two and a blemish that more careful inspection revealed after our wedding day. I'm glad to say that I decided to accept those marks and blemishes, given that I brought a few of those to the table myself!! You gotta decide for yourself what you want to do, and I strongly suspect you can make up your own mind about that. Meantime, you've given us all a reason to spend a few minnits reading and typing!!! Good job, even if you are pushing our leg here and smiling all the while!