bcn complete lowerSeemed it around so often times and may't discover the blem. Everytime I feel I obtain some thing off, it is just oil smudges. Finest guess at this stage is scuffs on castle nut, or The 2 tiny silver spots inside the flare on the magwell. 1mm dots at most. BCM QC won't mess all-around It appears.Wonderful lower for The cash. Mine