I don't know if this is a regular refurb or not but the entire bayonet is a deep rich bluing to match the rest of the gun.Bolt remains silver and slide cover has been refinished as they ground off the year and maker off.Serial # YP21_ _ upside down N The stock is a nice dark unmarked without ###X's or the diagonal line through the box.Mag has a bar pinned under the follower that pivots slightly.Chrome lined.Run of the mill or something odd?