As I explained to CZ, it started as a small dot like the size of a ball point pen tip. I always check over guns before I take possession, but this was not seen until I got it home and cleaned. Anyway I was not going to worry about it. The gun is about 2 weeks old, never been fired and I carried it in a holster for the first time yesterday. I used an Uncle Mike's Mirage belt slide holster that I had because it seems easier on the finish (I'm anal about my guns being in near if not perfect until I add the character).
When I got home I removed the gun from the holster (I wore another shirt tucked in and the outer shirt). I noticed the spot was larger and felt like a bubble. It is like a blister when it breaks. It is more noticable now and obviously does not affect the mechanics, but I just got it.
This gun's intended purpose is for off duty carry.