“If you watch a slowed down version of the video, when he is about to descend from the roof, he turns his back to the camera that is recording him, he’s wearing the backpack and holding the rifle, to me it’s clear as day.”
Yes, absolutely. And then after he jumps he has to gather the Rifle back up after he lands so that he can carry it away along side his body in an effort to hide it and not make it so obvious. It looks like it is in a loose soft case designed for something else.
Exactly, the flaccidness seen is the result of the soft case, or cloth the gun is wrapped in being longer than the weapon.