A Heat Ray is a multi-purpose Necron fusion weapon similar to Imperial Melta Weapons, and is most commonly mounted on Triarch Stalkers whose role is to provide close fire support. Heat Rays are potent weapons in that they are capable of firing in two different modes. If an enemy tank stalls the main Necron attack, a single focused blast from the Heat Ray is sufficient to end the threat. Similarly, if dug-in infantry are hampering an advance, a Triarch Stalker can break the deadlock by setting the Heat Ray to fire a dispersed beam and sending a wide cone of scorching plasma swirling into every crevasse to broil the enemy alive. Whereas a focused beam is akin to a Melta Weapon with a significant range, the dispersed beam is more similar to a Heavy Flamer in terms of the potential damage it can inflict.
- Codex: Necrons (5th Edition), pp. 38, 83
- Codex: Necrons (7th Edition) (Digital Edition), pg. 202