Ya know, I have actually watched and listened to a lot of different footage, especially police body cam footage, and I would bet money on more than one gun being fired.
I know a lot of people have tried to discredit that saying "echoes" and a host of other phenomena to try to convince people that he acted alone, but echoes do not change the amount of bullets that are being fired and the cadence or rhythm or how many rounds are being fired. Echoes are like mirror images. What sound you make bounces back. When you yell "hello" into the grand canyon, it doesn't echo and say "good morning".
I don't know if I have linked these two videos before, but I want you to watch and listen very closely. I believe most of us here have been around guns and shot them enough to be able to discern for ourselves what we are hearing and seeing.
In the first video, only a couple seconds after the video starts, watch the tarp on the fence to the left of the officers. You can see a bullet go through and move the tarp. Which direction is that bullet traveling? Left to right.
Catch is, the mandalay bay where the lone gunman was supposed to be is on the right of the concrete barrier. The opposite direction of where the bullet came from.
Some say richochet. Nope. With as short of a delay from the time you see the bullet move the tarp until you hear the gunshot or even the angle of the bullet travel, I don't think so.
In the same video, fast forward to ;56 seconds until about 1:10 and listen to the burst. Within the burst, you can hear distinctly what sounds like a handgun being fired. Whatever it is, is unrelated to the rifle burst. It has a different rate of fire and a different number of shots that were fired.
For those that still think it was a bump stock ar, this is probably the best video I have seen that debunks that for anyone with more than a room temperature IQ.
I still think the dude was running guns illegally and his buyers got the better of him and did most or all of the shooting and dude got patsy'd. Also remember that police reports said there was a missing hard drive too. Just something to think about.