I purchased 2 polymer mags for my S20, one from CSS, the other off EBay. They are both of the same manufacture and they both will not feed rounds in my gun if they have more than 3 or 4 rounds in it. Has anyone had any luck modifying them by filing down the tab on the rear of the mag to get a better feed angle, or should I just return it for credit towards a metal mag?
Thanks
Craig