This thing is beautiful. Dull Black with really dark grey parts. I know it's not cheap cause I've had one of those.

Side Knobs: dark grey with nylon bushings and big,       Knob rail is also dark grey

A2 sights: are dark gray site knobs are black
       has a 6/3 setting before the z on the
       adjustment wheel
Handle has M1S engraved diagonally on the top
     right area next to where the site blades
      meet the handle

When I say that some parts are dark grey,,They are almost black but not a perfect match to the handles base. Looks like a dry film

Markings: just the usual adjustment marks and a
1S on the small peep and a 0-2 on the larger peep.

Also this is machined not cast aluminum.

Any clues?
Thanks
Kirk