Second Balistic Advantage barrel I bought from Arm or Ally. First one was flawless! This one, however, looks more like a blem barrel. The exterior was stained with the oil from the clear plastic bag. Luckily, the brown stain did come off with wd-40 and paper towels. Then I noticed there were scratch/scuff marks along the barrel as well as fine circular marks/scratches around the barrel. Since I did get it for a good deal on black Friday sale, I let it go.. Just hoping it's all just cosmetic and the barrel is solid. Funny I'm normal very picky and quick to return stuff with less flaws... I wouldn't even have wrote this review had they not emailed me asking for a review. Maybe my ocd is slowly being cured? Just completed my build and will go shoot it soon. If anything odd happens, then yeah, I'll be sending it back and seek replacement.