The Slow-mo guys recent M16 video lets you see a little full auto action in slow motion:
Some folks were amazed at the “glowing embers in the shell casing”. That didn’t impress me, that’s normal. But what I found interesting was the slow blink reaction time, that really puts speed into perspective.
For more in depth gun guys you’ll appreciate the more scientific approach of videos from Vuuwapen Blog that show bolt bounce on an over gassed ARs: