Have any Mann owners found problems with magazine retention? I discovered the mag catch on mine does not engage the magazine at all, which has been the reason for the magazine jumping out when loaded.
I found this out after I fixed the feed lips on my magazine. Left me feeling like a real genius, for sure. Somewhere in the gun's life, someone bent the feed lips out in a poor attempt to keep the mag in the gun.
At it's most extreme position, the mag catch barely engages the mag. I am tempted to remove the catch/button and carefully file away the front just enough to give the catch more movement.
I guess this is the reason why it appears it was never shot. :P Since I can't shoot it (not that I planned on shooting this much in the first place), I went ahead and got a new case to display the gun in.
EDIT: For anyone needing new grips for their Mann, vintagegungrips.com sells them for about $35 I believe.