Hello! I currently have a Glock 23 and 19. I went into purchase a new Glock 20SF today. It was the last one they had and was the display model. I asked the salesman if I could fieldstrip the firearm so that I could look under the slide. During my inspection, I noticed a scratch along the side of the stripper rail. My other two Glocks (which I purchased new) didn't have this issue. The salesman stated that it's a new firearm and that it mostly came from the factory like that. But my first thought was that since it was the display model, a customer may have caused the scratch. But I'm not an expert, so who knows. I've checked online and haven't found any information about this except for someone mentioning that it may have been caused by not putting the slide back on correctly. I found this picture online that shows a similar scratch on the same side of the stripper rail. I don't recall how deep the scratch was on the 20SF I purchased. I'm just worried that it may lead to something later. If you look at the stripper rail and go south, you will see the scratch. Thank you in advance for the help!