We were already working with some of them in the late 80’s, 90’s with shotgun projectiles. Small explosive charges and chemicals.
I can’t imagine how much further it’s gone since.
The biggest stubling block to future handheld weapons is the fact that what we’re using is so effective and more importantly cost effective for all but the most exotic things we can imagine.
Bullets that are completely untraceable and completely disintegrate on impact were science fiction just a few decades ago and I can make them right here at home now. That’s scary.
