IMHO, we are very close to an electromagnetic technology that allows lethal rounds to be fired with only the current from a lithium ion battery.
My son has such a toy that can rip a coke can to shreds from 30 feet. It uses plastic 6mm pellets. It’s also full auto... And it’d not even a “gun”. It’s a toy.
What is it and where did he get it? Got some bunnies that could, uh, benefit from something like that. If they ain’t paying for the grass, they don’t get to munch on it.