I also have a G30, it's a great handgun. First, even though it may sound silly; make sure you have the 10 round mags. I understand that there are also 9 rounders for the G30. I also had the 10th round struggle with my mags. I followed some advice and loaded each mag to capacity and left them loaded for a week. Then I unloaded them for one day and repeated the sequence for another week. Now the mags will easily take the 10th round and will lock into place with moderate effort. Racking the slide while a loaded mag is in place still takes a little more effort, but everything functions as it should. Good luck, and good choice going with the compact .45 ACP.
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