This is my first Glock, uhh, ever...<blush> and I am having a Tactical issue with my weapon. It is a used Glock 23 .40 with the 13 round mags. I can't get the exact date from the serial number, but I did find out it's a Gen 2. I know that the fully loaded mags were designed to swell so that there wasn't an accidental magazine release during shooting, but the empty mags won't drop either. I have lubricated them but I see where there are slide marks on the mags so I'm thinking the tolerances are too tight. I thought about sanding down the sides a few microns with some emery paper, but I wanted to hear from the Glock nation before I went to extremes. I have also thought maybe the mags were just wore out and are simply too swelled but I can't find any subject matter on that here, nor have I heard this issue from my brother's in Law Enforcement. I do not like the fact I have to use the hand that should be securing a fresh mag to pull the empty one out. That is tactically unsound. Any input would be greatly appreciated.