Slow Motion AR15 SBR DI Gas System Fireworks

Still frame slideshow: https://www.youtube.com/watch?v=oia6421VEcM

I originally went out to capture some high-speed footage of some fireballs, but the ammo I was using (American Eagle 5.56 55gr) didn't produce very dramatic fireballs. I was lucky enough to catch some fireworks from my gas system failing though, so it turned out kind of cool anyway. Everything started out normal, but at 0:43 something felt "off", not like a squib or anything, just different, so I checked the action to see whether or not it looked alright. After that it shoots normal until the second round of the double tap at 1:10, then it becomes obvious that the gas system is shitting the bed. This rifle has quite a few rounds through it, so it is about time for a tear-down and inspection. If I find anything interesting, I'll post a follow-up video.
Filmed at 240fps.