Wrecker Weapons and attacks with this special rule may re-roll failed Armour Penetration rolls against fortifications and immobile structures (such as bunkers and barricades), and add +1 to any result rolled on the Building Damage chart. If this attack damages a bulkhead or wall section of terrain and destroys it, remove that section of terrain from play if possible.
Armourbane If a model has this special rule, or is attacking with a Melee weapon that has this special rule, it rolls an additional D6 for armour penetration in close combat.
If a model makes a shooting attack with a weapon that has this special rule, it rolls an additional D6 for armour penetration. In either case, this special rule has no effect against non-vehicle models.