Daniel Defense DDM4 is not “civilian grade” and it most definitely will give a a full mag dump with slide fire stock (I’ve done it many times), especially firing at a downward angle (gravity and all that).
I truly wonder about some of the misinformed comments freepers are making lately about this case. “No way he could do that” “no way he could drag all that gear to his room” “no way he did it alone” blah blah blah...
I sincerely hope the investigators have more of a clue than the armchair sleuths on this forum.
Yes, Bwanna.