Hi, I'm new here and have a question for anyone that might know..... A friend dropped off one of these for me to work on but I'm not sure which one it is? All the pics I have seen have 5 screw/pin holes in the side of the receiver. The one I have has 6 screws plus 4 screws that hold the stock on? 2 on each side right behind the rear of the receiver. Any help would be great. I'm trying to find some decent screws to put the stock back on with. Someone had replaced then with 2 bolts running through the stock with a nit on the end of each, not very pleasing to look at lol.