Far more powerful than any other pattern of Lascannon regularly fielded by the Legiones Astartes, the Arachnus could inflict devastating amounts of damage with each hit, far more than any standard Las-weaponry.
The Arachnus Heavy Lascannon Battery is still found in use by the various Space Marine Chapters and possibly the Traitor Legions that still maintain functioning Deredeo Dreadnoughts in the 41st Millennium.
- Forge World Webstore - Arachnus Heavy Lascannon Battery
- Imperial Armour Index: Forces of the Adeptus Astartes (8th Edition), pg. 29
- The Horus Heresy: Legiones Astartes - Age of Darkness Army List pp. 11, 78-79