Today I bought my second optics ready Shield Plus. I really like the platform and the size. I have had my first one since May and the original 13 round magazine is impossible to load the 13th round in. I bought several other extra magazines and all of the 13 rounders were impossible to get the 13th round in. I was just fine with using them with 12 rounds. The magazine that came with the new gun that I got today loads the 13th round with no problem at all without use of the Maglula loader and it will insert into the gun easily and you can cycle the slide easily. I'm not sure what they did to them, but they are much, much better. I will take it apart when I have time to see if I can see what is different. Really like the Shield Plus platform. This coming from a long time Glock shooter. Probably won't give up all my Glocks, but the Shields will be my carry guns most of the time.