I just wanted to give a big thanks for this post! I just completed the Barrett M82A1/M107 LE/MIL armorers course at NRA HQ . Excellent course with a great instructor (Don, Barrett's head armorer and trainer). Only cost to me was the hotel and drive. It was indeed luck of the draw, but an overall great experience with an awesome variety of students. I learned more about the Barrett than I ever thought possible or expected. I am now officially factory certified by Barrett for 3 years. As I am sure there are already a few on this board, I feel confident that I can now answer/discuss any Barrett related questions if it comes up. Thanks again!