Heavy Bolters

Weapons with [ASSAULT] in their profile are known as Assault weapons. If a unit that Advanced this turn contains any models equipped with Assault weapons, it is still eligible to shoot in this turn’s Shooting phase. When such a unit is selected to shoot, you can only resolve attacks using Assault weapons its models are equipped with.

Weapons with [SUSTAINED HITS X] in their profile are known as Sustained Hits weapons. Each time an attack is made with such a weapon, if a Critical Hit is rolled, that attack scores a number of additional hits on the target as denoted by ‘x’