Carapace Chitin-rams
Carapace Chitin-rams are a Tyranid close combat Biomorph most commonly encountered on the Stone-Crusher Carnifex.
It allows the charging Stone Crusher to tear through the armour and defences of its targets[1][2b], and even more so against buildings, fortifications, armoured vehicles[1][2a], and monstrous creatures. [1][2c]