DETAILS, FICTION AND BCM LOWER COMPLETE

bcn complete lowerAppeared it around so again and again and might't find the blem. Everytime I feel I uncover something off, it is simply oil smudges. Ideal guess at this point is scuffs on castle nut, or The 2 small silver places while in the flare with the magwell. 1mm dots at most. BCM QC doesn't mess around it seems.The Mk2 upper receiver moves