You will never KNOW, but the evidence would strongly suggest that you have a very nice "parts" gun. I'm guessing that the double cartouches occur on the stock for ANOTHER reason than currently presents, and are thus adding to the puzzle as opposed to solving/supporting it. There are some things that, in my opinion, SA would not have done: 98 bolt in "96" receiver, rifle sight on a carbine, etc. Sorry, but that's my take.