Hi,

after I destocked the rifle I checked again the fit of receiver, mag box follower etc. The gap between mag box and action surely comes from the rear screw being too long to press the parts together. After I put everything together, leaving off the folloewer, I noticed a 2mm gap between mag box and receiver with the screws tightened. So I guess the stock should be modified to set the mag box deeper and the screw should be shortened to give a tight fit without any gap. Sorry for my awkward description of those things, I'm mostly a gun user, not adapted to do more work on my guns than to unscrew parts and clean them...

regards
Ulrich