As much as I love a good conspiracy theory, sometimes the bad guy just gets lucky.
Think about this: he wanted a high vantage point because that’s what snipers do in movies. So he sets up almost 400 feet above the crowd. The crowd of 22k is tightly packed, so literally every target is a head because all the bodies are behind the cover of the head of the person next to them.
He starts firing down and with bullet trajectory, it is almost plunging fire into head after head. Lots of blow-through as bullets punch through a head into the body next to it. This is how he was so effective at kills.
Then, add in the media and government who claim that every injury, no matter how slight, is the result of the shooter, so you get 500 injuries...which the media inflates to be wounds.
The fourth floor shooter has been shown to be a strobe light.
The cops took forever to enter after he killed himself becuase it was highly likely that there would be booby traps behind the door.
So, the only real conspiracy theory left is how did he get all those long guns in when every square foot of Las Vegas is monitored by cameras and top notch security experts?
That is the million dollar question (no pun intended, given that it was a Vegas casino hotel). Is it possible to disassemble such guns and put them back together? I don't know anything about guns. But if it were possible, he could have put the parts in a backpack or regular luggage, then put them back together. ??
There was a music festival in town. So how about guitar cases?