Coil Railgun

Inverted railgun with magnetic slug and coil rods left and right. Pure DC on-off, no pulsed coils. Brushless railgun, launch tube is separate from the current flow. Launch tube can be anything. Also supports very fast constant rapid firing, just turn on the coils, and insert slugs as fast as you want to fire them out of the barrel. If you want even more juice out of the box, use super conducting YBCO coils with 100kA current easily.