Katester10

Question: I have a Glock 19 Gen 5 which I understand came with a match grade barrel (correct me if I’m wrong). I added Zev night sights and a nice 3lb Timney trigger. I love it! Thinking of adding an upgraded barrel - threaded stainless steel match grade. Please give me an idea of good manufacturer and whether fitted or drop in is suitable for my current set up. Any ideas are appreciated. Thanks!