[Jarhead9297]

Listen VERY closely to the audio. No manufactured fully auto weapon has a variable rate such as the one produced in the videos I have seen. My guess is he is using a semi auto weapon slide fed with a bumper thus rendering the gun fully auto. Once you pull off that first round you can stop until the rounds are expended

[Jarhead9297]

Can’t stop until rounds are expended

[precisionshootist]

"Listen VERY closely to the audio. No manufactured fully auto weapon has a variable rate such as the one produced in the videos I have seen. My guess is he is using a semi auto weapon slide fed with a bumper thus rendering the gun fully auto. Once you pull off that first round you can stop until the rounds are expended"

I concur. You can clearly hear the rate of fire slow then speed up in a choppy manner in the later shots. However the very first part of the audio there is a ten second burst with a very steady rate of fire. That burst sounds like a belt fed to me. He may have had one belt fed in one location then moved to the other and used a slide fire/bump fire stock or other full auto simulator. Shooter was almost certainly changing weapons during the shooting.

[Prolixus]

I'd never heard of a "slide feed" before but the audio from last night's shooting sounds very much like the audio of this "slide feed" demonstration: check-out-the-semi-automatic-rifle-with-machine-gun-like-rapid-fire-and-its-legal.