In an earlier thread I had described my incident with my GP100 and the bullets that were lodged in the barrel. Remington paid the bill to have the gun fixed. I got the gun back, finally, this week. I sent the gun out in March. According to the paperwork they sent back with the gun, they replaced the barrel, repaired the cylinder, replaced the trigger spring guard spring, and replaced internal components. The paperwork also states the gun was safety function checked, proof tested and range fired tested. I thought there was supposed to be a fired shell casing sent back with the gun, but there was none. My question is the pic that I have attached show some kind of brown, gold color in the barrel all the way down. I cleaned the gun and brushed the barrel and found that some of this substance actually started to disappear. Does this look like a new barrel? Just curious. I don't think when I bought the gun new the barrel looked like this. As always I really appreciate everyone's help, opinions and advice.