I have had the honor of doing the first cleaning on many new Glocks last touched at the factory, and this is a first. I posted that I had bought a new (sealed box) gen 4 G17. I shot another 50 rnds through it today and thought I would tear it down for a complete cleaning. I had noticed that it appeared that the spring rod stuck out a little too far. I just assumed it was a gen 4 thing. Upon disassembly I discovered the slide lock had been installed backwards. All else was fine and it had shot fine. After I reassembled the gun it looked, “normal”. Something you might want to look for when you take it apart. And no this has not changed my feelings on Glock. Someone just made a Monday morning mistake.