Era looks like a young Jeff Tweedy . <| sep |> For damn good reason . <| sep |> SEE ME WITH THEM YAMS BITCH NOOOOOOOOO HAHAHAHAHAHA I REBUKE IT <| sep |> I doubt they would be able to provide any answers . Odds are , it ' s just some kind of proof marking . I ' ve seen the mark you described before on a few 9130 s , I don ' t believe it is rare in anyway . You could always try writing to the armory , see if they could shed any light to it . But I honestly doubt it . Good luck to you ! If your search comes up with a more detailed list of the markings keep us posted ! <| sep |> If it makes you feel better , holierthanthou liberals are laughing and mocking themselves into extinction in Europe , too . <| sep |> Why not just ask him yourself ?