IDK about y'all
Gravel
or
Big Phoenix
but even an ND into a clearing barrel was going to straight up demote you in most cases when I was in Iraq 2006-2008. If you ND into a clearing barrel anywhere it was just paperwork and you'd get smoked and shit sure. Only once did I see someone ND not in a clearing barrel and I only ever saw 4 NDs personally.
The one time, a room of like 40 people we were cleaning weapons and hanging out in the bunkroom in Baghdad. Dude ND's in the middle of the room... and somehow manages to not hit any of us. The First Sergeant walks up takes the guys M4 then butt strokes him right in the face with it. Him and a platoon sergeant drag that dude out by the scruff of his neck and we didn't see his ass for like two days.
He had to, among other things, exercise till he puked, platoon sergeant straight beat the shit out of him and dig his own grave twice and sleep in it. This was like November 2006.
ND is outright impossible if you are not a retard shitbird.
I've heard enough stories and seen enough, "cover up" to believe that some dumbasses have killed people with them during the Iraq period. My favorite story that I heard many times was that in 2003 a dude doing Mess Headcount got killed because he asked and officer if his weapon was clear. The dude said yeah and pointed it at the guy's face and killed him because it wasn't. I am like 50/50 on that being true but I personally believe it because I heard it from way too many people who were actually in Iraq in 2003.