Long ago when I had the full capacity magazines...they were so easy to load.
Later, when converted to 10 rounds, with a follower travel limiting piece cemented into the mag body, loading 10 rounds was so easy, as the spring had room for 15 or 17 (depending on which Glock it was).
But the new factory magazines, with that white plastic block in them, mean you have to use the loading tool to force that 10th round in against very tight pressure. You literally have to force it and have to use the tool.
That wasn't in the original design. That was a legal compromise.
When you slam that full 10 round mag up in there, against that kind of pressure, you're probably not making the mag release very happy. I'd swap that mag release out for starters.
Also, those G17 mags you're using for mag changes...the bottom of the mag isn't in the frame as the G19 mag would be, right? I don't have them to look at now but would that be a bit less stable at the bottom?
