FASCINATION ABOUT BCM LOWER

bcn complete lowerLooked it around so many times and may't discover the blem. Everytime I do think I uncover a thing off, it is simply oil smudges. Best guess at this point is scuffs on castle nut, or the two small silver places from the flare of the magwell. 1mm dots at most. BCM QC does not mess close to it seems.The Mk2 higher receiver moves mas