The only way I can see a problem happening, is if you don't set the barrel all the way in the receiver, and manage to lock it in a position where it is offset by exactly the distance of one row of locking lugs. Then you could fire out of battery, with the round held by the extractor and going off when you pull the trigger.
One would have to be working hard to screw up in this way... Or do it on purpose, for the sake of claiming $$$ from the company.