Maulerfiend

If this unit makes a charge move, is charged or performs a Heroic Intervention, add 1 to the Attacks characteristic of models in this unit until the end of the turn.

Instead of following the normal rules for Rapid Fire weapons, models in this unit firing Rapid Fire bolt weapons make double the number of attacks if any of the following apply:
• The firing model’s target is within half the weapon’s maximum range.
• The firing model belongs to an INFANTRY unit and every model from that unit remained stationary in your previous Movement phase.
• The firing model is a TERMINATOR, BIKER or HELBRUTE.
For the purposes of this ability, a Rapid Fire bolt weapon is any weapon with the Rapid Fire typ whose profile includes the word ‘bolt’ (e.g. boltgun, Inferno boltgun, inferno combi-bolter, etc.).