Heavy bolter

This ability always takes the form **[SUSTAINED HITS X]**. Each time an attack made with a **[SUSTAINED HITS]** weapon results in a **critical hit**, that attack results in a number of additional hits on the target as denoted by **X**.
***Example:** An attack made with a **[SUSTAINED HITS 2]** weapon results in a **critical hit**. That attack therefore hits the target three times (once from the **critical hit**, and twice more from the **[SUSTAINED HITS 2]** ability).*

In your Shooting phase, each time an attack is made with a **[HEAVY]** weapon, add 1 to the **hit roll** if all of the following apply to the attacking unit: 
- That unit is **unengaged**. 
- That unit was not set up on the battlefield this turn. 
- No model in that unit has moved more than 3" this turn.