Prototype coil/gauss gun. Imagine the potential here and what we can have in 5 years with a few million invested.
Conceptually, yes, but it is finally reaching commercial stage. But that is highly unwieldy and velocity far too low.
I have my own suspicions having to do with the compromised barrier and amygdala hyperactivation causing rage and uncontrollable emotional outburst that can't be controlled by the frontal lobe/rationality.