[ Priad shifts, as if he doesn't understand the question. After all, the Imperium uses virus bombs, planet-breaking torpedos, and void grenades somewhat regularly, though only for situations that require it. Arguably, his entire chapter is a weapon of mass destruction, as 100 men like him is enough to dominate a planet of several billion normal humans. ]

You mean tech-heresy? The Mechanicum would deal with that. If it were determined that such a thing was happening, my Chapter, or whatever chapter was closest, or whatever military formation of the Imperium can be summoned, would be activated to purge the offending developments, and those who made them.

The Imperium is vast. But if such hypocrisy came to my attention, I would destroy it. [ With brutal efficiency, no less. ]