The Graviton Singularity Cannon is a large Gravity Weapon used by the combat walkers of the Questor Imperialis, the Imperial Knights, and by the Renegade Knights of the Questor Traitoris. The Graviton Singularity Cannon is found only on the Cerastus Knight-Atrapos.
The Graviton Singularity Cannon creates a quantum singularity in the fabric of space-time that tears its target and the surrounding area apart with extreme gravimetric forces. The weapon is extremely effective against any target that is trapped in the singularity, however it is especially effective against vehicles, the more massive the better.
The Graviton Singularity Cannon is violently destructive, but potentially unstable and hazardous to its user since every time it is fired there is the risk of the singularity collapsing, resulting in the outright destruction of the Knight that wields it.
- The Horus Heresy - Book Six: Retribution (Forge World Series) by Alan Bligh, pp. 278-279
- Imperial Armour Index: Forces of the Astra Militarum (8th Edition), pg. 97
- Imperial Armour Index: Forces of Chaos (8th Edition), pg. 61
- Forge World Webstore - Cerastus Knight Atrapos