That means 18 year olds will get splattered. I'm not for that. The kids who die in the military are just kids, regardless of their job. They aren't personally responsible for the shit orders they get.

The problem is that anything made for defense is almost inherently useful for offense, and the US is not the most trustworthy government right now. It's, sadly, not inconceivable that an automatic turret mounted shotgun could be put to use against human people across the globe, or even human people who are citizens of the US.