Jezzailli
From Warhammer 40k - Lexicanum
Jezzailli were a type of Laser Weapon used by the Imperial Army during the Great Crusade. Jezzailli were essentially long-barreled Lasguns that more resembled a spear than firearm. They were topped with a metre-long bayonet.[1a]
Terran-Forged Jezzailli
A Terran designed variant of Jezzailli fitted for Astartes’s usage, these weapons possessed Plasma chambers that were noted to light up nearby objects with a blue glow.[1b]
They were known to be used by the Deathwing of the First Legion, during the Great Crusade and Horus Heresy.[1b]