It's from the annual Special Operations Forces Industry Conference (SOFIC), they do a similar demonstration every year. Here's a 25 minute video with just a few slow moments:

https://www.youtube.com/watch?v=ct5dEUtY4_w

https://www.sofic.org/

More on the MH-6:

https://www.thedrive.com/the-w...ed-machine-gun-setup

https://www.thedrive.com/the-w...alkers-aviation-plan