You can get that kind of wear if the anodizing (or whatever was used to condition the metal of the B/C prior to shipping) wasn't real "thick" to begin with. On my newest M4LE, the B/C has a real thick coating on it, and it'll take some shooting before it begins to wear down to
that point. However, my Bushmaster looked like that after a very short time.
Two things you can do, if you want.
1) Check to make sure the surface of the hammer doesn't have heavy machining marks or other "detritus" on it. If it does, take 1200 grit or so sandpaper *OR* Dremel with some polishing rouge on a buffer wheel and polish the upper third of the hammer face where it contacts the B/C.
2) put a dab of Tetra gun lube (the white grease in the little tube) on the B/C where you see the wear points, and smear it along that area. I found Tetra to be a good lubricant because it STAYS where you put it, despite the heat generated by shooting.
Bottom line is that eventually you are going to see this no matter what you do. Although for a new gun, that does seem a bit excessive (could be the pic quality, tho) considering you were just dry firing...