One thing you can check. The magazine and follower have a slit on the back. This hooks into the magazine safety/holdopen. The triangular bit. It still looks like that part is not doing its job properly.
It is clear that something is not right if the magazine will not go in far enough for the magazine catch to go over the back edge. To try and diagnose problems like this on a forum is tedious at best. Having hands on, with a second pair of eyes by someone familiar with this model is the best suggestion I can offer. Regards,
If it's not a huge rush to resolve, keep a eye out for a reasonably priced mag. Then you can try the 2nd mag and if it doesn't work then You know the issue is with the gun and not your current magazine. eBay and gunbeoker very occasionally a decent price can be found.
Hopefully it works for you. My experience with aftermarket mags is Generally they feed correctly, just usually it fails to hold open the slide after the last round. One or two would misfeed seemingly because the base was to thin allowing the mag to be a little lower than it should have been. But holding a small amount of pressure upwards on the bottom of the mag allowed me to fire the pistol with no issues.
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