A lot of times, and 100% out of good faith, I'd wish I can participate in the designing process at ATRS (Like even volunteering). Critical dimensions like BCG travel distance should've been caught had they double checked. Perhaps the reason was they had to make room for the buffer retaining plunger milling so plunger was moved forward, but I'd rather have a half moon notch up on top under the charging handle so that the retaining plunger would be at the right spot, than have my bolt not lock back sometimes. This happened to me too last week.
Where can I hand in my resume? LOL