I hear you. What I'm suggesting is that this may be a warranty issue to replace the upper with the damage and/or bolt carrier on a case by case basis. It does look significant, but I haven't seen a lot - I mean like a 100 or more people posting and reporting the same issue. Then there can be mutual agreement there is a serious flaw somewhere. If there are enough cases to warrant a serious redesign, maybe they will change it and replace it for the affected customers under warranty.