I've tried doing some research on this forum and others about barrel wear and have found that barrel wear is normal and tends to wear faster on the new G19 Gen 3's and Gen 4's. Would any other owners agree / disagree? Pics below. Next, I've seen a lot on nickel boron barrels and slides but have not come across anyone with just a nickel boron barrel (only polished). Has anyone heard of this and how it holds compared to the black oxide finish on Glocks? I've only put 480 rounds threw it at the range and although I oil the barrel and underneath the slide pretty well, it's kind of pain to see in a one month old gun even though it doesn't affect performance. Let me know you what you all think. Thanks! The wear on the top of the barrel. The wear on the inside of the slide where the opening ends.