It seems that the Plasma Weapons used by the Stellar Empire are just an advanced application of a technology known also by the name of Fusion Guns. Even these are too advanced for us, but we still can employ their basic physical principles to be able to blast enemies with Plasma, especially since we don't mind Hellerium radiation that is sure as hell to leak out. We expect good accuracy and hefty, dependable damage, but power loss over distance is unavoidable without Magnetic Containment mastery.
We'll need a Printer to manufacture these.