My point was he should bring it to a gunsmith to help fix the current issue, but not to generally field strip his gun.
If the guide rod is backwards, the gun is locked up, the guide is has no where to travel. I just tried to put the guide rod in backwards in my P365 on purpose, and I couldn’t make it do it…how did your SIL manage to do it? How did he get the slide to lock back in place on the frame? I’m very confused.