just watched that vid. that guy is a retard. if you shoot a DE without eye protection your gonna go blind from bits of burning powder and metal debris landing in your eyes. its a gas operated pistol similar in function to the ar15/ak47. the big difference is the DE has no enclosed upper reciever to block debris hitting your face.
after a range trip with it you end up looking like you got freckles from all the burnt powder and residue.
they are highly impractical for anything cept fun at the range.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent