Weapons. All Weapons have very distinctive sounds and cycle rates in auto mode. The Vegas Shooters are no different. I have compiled an audio of the gun sounds and compared them to the type of modified weapons proportionately used in the Tinsel Town Massacre. Give a listen.
Weapons, as I stated earlier all have distinctive sounds and cycle rates when firing in auto mode. The sounds you just heard in all three Shooters clips indicate more than one weapon and cycle rate. The various weapons are being shot simultaneously. It is near impossible to john Wayne two Auto weapons with any accuracy. especially when they are modified as the weapons found in the purported Shooters room with bump stock modifications.
I have to run with the idea that there may have been more than one shooter involved in this Massacre.