I just watched video again!  The mag was not kicked!  Are you blind.  He enters with shot gun blasting then tosses it.  Follow the kicked item (part of scope I think) it doesn't go any further  than about 5 ft.  Yeah I saw the blood you mention.  Your missing the lack of blood & bullet holes I mentioned.  The entire place still has nice white walls (hole less),  no blood spatter after shooting the man who tried to jump him in the head.  Are you blind.  Watch it again.  I don't need to be right. Just sharing.