As the title says, I just ordered an extended mag release from NDZ Performance for the G43. I installed it without issue, or so I thought. The kydex holster I carry it in needed some modification to clear the new part, so I just ground off some material from the holster no problem. Went to suit up for work today, go to chamber a round, mag falls out. Thought maybe I didn't seat it good. Tapped it, racked again, mag falls out. Maybe I'm holding the extended button down. Move hand out of the way, tapped, racked, mag fell out. Removed slide in case it was causing too much downward pressure on the mag, tapped mag in, did the pull test, magazine can be pulled right out without pushing the mag release. There is tension on it, so its dragging along the side of the mag, but I guess the catch isn't seating all the way into the notch on the mag. Had to go to work so I grabbed the LCP instead. Will try the stock mag release as soon as I get home. Any ideas?