I recently purchased a benelli m2 tactical it has the comfort tech stock on it. I purchased the pistol grip stock And attempted to install it and it does not seem to work. seems as if it’s too short Or it doesn’t quite fit. Has anyone ever had this or similar issue with replacement or changing out the stock. Not sure if it’s because of the configuration I got it with has something to do with it. Has anyone had this issue ? Is there different size bolt where the nut screws on to secure the stock.