Get a long flathead screwdriver with a square shaft. use a crescent wrench for extra power
I had one like that, I had to crush the stock and remove the screw with a vise.
P.S. That stock is tougher then you think!!!!!!! I took a sledge hammer to it, but the red plastic commie laughed it off.
I cant beleave they would use a slot head for that screw!




























