The clip that just magically appeared was actually one that jammed and he dropped it and later picked it back up. But along with the disappearing bullet shells you have a body in the hallway that was shot first with no socks on later had blue socks on, a body with head under bench that was never even shot, also bodies already piled in both corners that were not shot at first, plus they were in front of a door, no blood splatter, no holes in the walls, the Shooter's face blurred out in the rearview mirror