Because of the position of his body, and the position of the gun(s) in proximity to his body. He is laying flat on his back, straight legs, straight arms along his sides. His left leg is under the Harris bipod of one of the ARs, so did he shoot himself while standing, don’t think so. Was he seated on his ass, or laying flat on his back when he shot himself? Well how did the revolver end up above his head by a foot and a half, while his arm(s) are straight down along his sides? What did he do, shoot his brain bucket, and the gun ends up above his head, and he puts his arms down to his side after he’s done killing himself? Maybe he used the AR, set it down over his leg(upright) and laid down. The three spent casings in the blood, if they weren’t fired after he died, and landed there, how did they get there? They were kicked in, shouldn’t at least ONE of them have blood showing on it, they were already laying there, well I don’t think he died standing up, because of afore mentioned AR, so shouldn’t there be blood splatter on them from blowing out the back of his head? I don’t know, but those pictures don’t look like he killed himself to me.
ARs, so did he shoot himself while standing, don’t think so.