A Lascutter is a powerful but extremely unwieldy type of Laser Weapon. Originally, the Lascutter was developed to serve as a simple industrial tool intended for cutting through armored bulkheads and dense ores for orbital construction and planetary mining operations. These weapons make use of disruption field-assisted short range laser arcs to cut through their target's dense molecular structure like a hot knife through butter. Later, during the Great Crusade, Lascutters were adapted for use as weapons during warfare. Lascutters proved extremely valuable during sieges and void-based boarding operations, where they were able to breach enemy fortifications or voidships and if necessary become devastating close-quarters weapons. They were a particularly favorite weapons of the Space Marine Legions' Breacher Siege Squads during the various campaigns of the Great Crusade and the Horus Heresy. In the late 41st Millennium, the Lascutter, scaled down to mortal size, has also been employed as a weapon by the platoon Command Squads of the Imperial Guard's Elysian Drop Troops.
- Imperial Armour - The Horus Heresy - Book One: Betrayal, pg. 235
- Imperial Armour Volume 8 - Raid on Kastorel-Novem, pp. 96-97