A Heavy Graviton Cannon, also called a Heavy Grav-cannon, is a graviton weapon deployed by the Adeptus Mechanicus on its Kataphron Destroyer Battle Servitors. The graviton technologies used by the Adeptus Mechanicus are fearsome indeed. A target hit by the Heavy Grav-Cannon's invisible field will be stunned and likely crippled, or even crushed under their own exponentially increased mass until all that is left is an oozing disc of biometallic waste.
- Codex Adeptus Mechanicus - Cult Mechanicus (7th Edition) (Digital Edition), pg. 233