EVERYTHING ABOUT BCM LOWER COMPLETE

bcn complete lowerLooked it above so again and again and will't find the blem. Everytime I think I locate a little something off, it is simply oil smudges. Best guess at this point is scuffs on castle nut, or the two small silver spots inside the flare with the magwell. 1mm dots at most. BCM QC would not mess around it seems.The Mk2 upper receiver