Like much of the technology of the Eldar, shuriken catapults are grown from the same psychoactive wraithbone that forms the physical shell of the Craftworlds. A specialised subset of Bonesingers, taken from those who have previously walked the Path of the Warrior, are tasked with crafting the weapons used by those who would defend their home. Shuriken catapults, and their sidearm equivalents, Shuriken Pistols, are among the first weapons those who walk the Path of the Bonesinger learn to mould.