I have a Bushy 14.5 w/AK brake in a A1 upper, I bought it about a month and a half ago. I took it to the range today and put around 200 rds down range. I got home and immediatly started to clean it. What I found, looking down the barrel with a bore light, totaly disturbed me! There are flakes of chrome MISSING from the barrel! Right where the chamber ends and the barrel begins. these flakes are small. My rifle is still under warrenty. Is this common or do I need to send it back to the factory?