No magazines.
Maybe a stupid question, but why are the Marines only wearing a knee pad on the right knee???
You only kneel on one knee and it's usually the same one.
Is the lead guy holding an SBR?
I don't believe so, the barrel extends into the "black" of the doorway.
Everyone with inboard pointing weapons is going to be aiming at the person in front of them as soon as they turn left into the doorway.