Suppressors capture and keep the gasses released within a gun barrel after firing. To see one fill with fire, smoke and (in some cases) break up into pieces is quite something to behold. Thanks to high speed filming, slow motion technology and a see through suppressor to give us pure enjoyment.
If you’re into the science of it all Dustin explains some of this in the video. But for most of us that are just bewildered with the slow motion, just enjoy the visuals.
Sources: Soteria Firearms Suppressor, Smarter Everyday Youtube