Refurb stamping was not always 100% consistent. My bet is that its a "clean" refurb.
That would be my bet too. I have a couple of refurbs in excellent condition. On one I had to look _very_ closely to see the refurb stamp on the stock...otherwise it looked new. The second one had a black bayonet, which is a sure sign of a refurb, but it looks great too....all matching numbers etc.




















































