All factory. Brand new. I shot great with it. I figured out though, if I hold the slide in place so it doesn't move back at all then the barrel chamber won't move around at all. So I think it was just the slide going back a very tiny bit and allowing the barrel to move.
But my main concern was the sig. As the slide is locked back, I can move the barrel back forth up down in out and even twist it a little. it just seems like it is allowed to move too much. Don't know for sure though. An the guide rod also can be moved a lot while the slide is locked back. Wish I could post a video.