Man! I wish they had named Murphy's law after some one else. A couple of weeks ago I saw where Midway had some Pro Mag 20 rnd magazines for my Mini 14 so I sprung for 3 of them. What a bust that was. The first one would not even go into the magazine well; the 2nd one would go in but not latch, and the 3rd one went in but I had to take the action out of the stock to get the thing out. Is it just my luck or has anyone else had Pro Mag problems? The 20 rnd Ruger factory mags are ultra scarce and the 10 rounders don't exactly grow on trees either. I have had not one problem with the factory magazines and I don't know who makes them--Ruger maybe or a contractor (probably). I know that they are very hush hush about the source.