Gauss weapons are the signature armaments of the Necrons, ancient and terrible arms that do not merely wound but strip their targets apart atom by atom. A gauss discharge flays away layer after layer of matter in a sickly green arc of energy, peeling flesh, armour, and bone from a victim until nothing remains. Against vehicles and fortifications the effect is no less horrifying, as hulls and walls are simply eaten away by the relentless molecular deconstruction.
This grisly method of destruction reflects the cold, methodical nature of the Necrons themselves, deathless machine-warriors who awaken from aeons of dormancy to reclaim the galaxy. Their foot soldiers carry gauss flayers and reapers, while heavier gauss cannons are mounted on their eerie, hovering war machines. No cover offers true safety, for a gauss weapon dismantles obstacles as readily as the foe sheltering behind them.
The technology behind these weapons is far beyond mortal comprehension, a product of a civilisation that mastered the sciences of matter and energy while humanity was still primitive. To face a Necron battle line is to watch waves of implacable warriors advance in silence, their weapons crackling with baleful light, methodically unmaking everything in their path. Few sights in the galaxy are as chilling as the green glow of gauss fire in the dark.