FASCINATION ABOUT BCM COMPLETE LOWER

bcn complete lowerAppeared it about so often times and may't discover the blem. Everytime I feel I come across some thing off, it is just oil smudges. Very best guess at this time is scuffs on castle nut, or the two small silver spots inside the flare of the magwell. 1mm dots at most. BCM QC will not mess all around It appears.Electroless nickel en