I have a gen 5 G19 lower and a Suarez 519 slide. It shoots fine, but if there is a loaded round in the chamber and the magazine is removed, when I attempt to eject the loaded round from the chamber, the slide goes most of the way to the rear, then stops, then will not return to battery. The slide will not come off the frame unless I retract the slide, hold it there, remove the backplate and let the extractor and drop safety fall out.
On the other hand, if I insert an empty magazine into the pistol and pull the slide, the loaded round comes out normally.
Do any of you have any idea what is going on with this pistol?