Cleaning my Glock 27 EDC gun today after a trip to the range. I noticed three scratch marks. Two on the slide, and one on the barrel. The marks line up. I wonder if this is just "normal wear and tear" or something serious that needs fixing. See the picture below. One of the entire assembly with red marks showing the scratches, the other one a details shot of the affected area.
I purchased the gun new, maybe a year ago, and it has maybe 1,000 rounds through it.