A small problem concerning backplate help needed.
FaisalK,
If the hole is just stripped, you can likely use a slightly-longer bolt of the same diameter. There shoule be good threads slightly deeper. The O.S. Max .46 FX uses M3x8 screws for the rear cover. A longer 3mm screw would work, as long as it does not hit the bottom of the bolt hole. Just carefully tighten it and you'll be fine.