From Warhammer 40k - Lexicanum
The Desecrator Laser Destructor is a type of Laser Weapon mounted on Chaos Knight Desecrators.
Boasting considerable range for a focused beamweapon, the laser destructor packs a tremendous punch. Each shot is preceded by a rising banshee wail as energy flickers about the weapon’s muzzle, before it discharges with a crack like mountains splitting asunder. Where the laser destructor’s blast strikes home, armor vaporizes and flesh turns to steam. The weapon is capable of ripping a foot-wide hole through solid Adamantium from a thousand yards away, and the irregular over-pulses that race down its beam can blast apart even the heaviest targets with sudden and unpredictable eruptions of energy.
- 1: Codex: Chaos Knights (8th Edition), pg. 36