Melta blastgun

Hits scored against a Structure by a weapon with the Bunker Buster trait count their AP as double its normal value, e.g., an AP of -3 would become -6.

Weapons with the Bunker Buster trait can damage Structures.

Hits scored by a weapon with the Anti-tank trait against an Infantry or Cavalry model treat their AP as 0, regardless of the weapon's base AP value.

Any successful Save rolls made for a Vehicle, Super-heavy Vehicle, Knight or Titan model using its Armour Save characteristic against a Hit scored by a weapon with the Armourbane trait must be re-rolled.