A Spinefist is a Tyranid Bio-weapon of a symbiotic living gun, typically carried in pairs, which connects its own air-bladder to the airways of its host via a long tube-like tail that burrows through the host's limb into their torso. A spinefist's lethally poisonous spines are coated with neuro-toxins which assault the nervous system of its victims, and are fired by a sharp exhalation of the host. Thus, a larger and more powerful host can exhale more spines in each salvo, ripping through the flesh of any caught victims.
- 1: Codex: Tyranids (4th Edition), pg. 30
- 2: Codex: Tyranids (5th Edition), pg. 82
- 3: Warhammer 40,000 6th Edition Rulebook, pg. 216