People say a lot of things that they'd never really do. I think he's trying to make a point that a KAC can take a beatin' and keep on tickin' (which is true).
Nobody here would do that. Unless they were getting paid for making a torture test video.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek