I would like to repair an old air rifle from my grandfather. But therefore I have to lose the main screw (picture). I have already tried to push the middle in and unscrew it with a small screwdriver (as you can mention from the scratches). Nothing works so far.. I am thankful for every hint.Air rifle screw frontair rifle screw counterpart via /r/DIY http://ift.tt/2uqlgWQ
