This is my first post. I just got NIB G33 and have shot exactly 43 rounds through it. Some where speer gold dots and some were Remington JHP.
When I got home I wanted to clean it up and I noticed these small marks inside the barrel. They are located on the bottom of the barrel. Should these be there? I am new to pistols and apologize for any ignorance I may show. If more info is needed let me know. Oh yeah I cleaned out the barrel with the brush included with a new Glock, it didn't remove the marks.
I took the best pics I could as shown below.