The Fusil Actinaeus

The Fusil Actinaeus benefits from the +1 To Hit from the Stormwing Unit sub-type during any turn where Lion El’Jonson is using that Unit Sub-type.

When attacking with a weapon that has this special rule, the controlling player may re-roll all failed To Hit rolls.

Twin-linked Blast Weapons
If the Scatter dice does not roll a Hit, you can choose to re-roll the dice when making a Shooting Attack with a Twin-linked Blast weapon. If you choose to do so, you must re-roll both the 2D6 and the Scatter dice.

Twin-linked Template Weapons
Twin-linked Template weapons are fired just like a single weapon, but must re-roll failed To Wound rolls and Armour Penetration rolls.

Any unit hit by one or more models or weapons with this special rule must take an Initiative test at the end of the current Phase. If the Test is passed, there is no further effect. If the Initiative test is failed, all models in the unit are reduced to Weapon Skill 1 and Ballistic Skill 1 until the end of their next turn. Should the attacking unit hit themselves, they automatically pass the Test. Any model that does not have an Initiative Characteristic (for example, Vehicles, Buildings, etc) is unaffected by this special rule.

If a model has the Rending special rule, or is attacking with a Melee weapon that has the Rending special rule, there is a chance that their close combat attacks will strike a critical blow. For each To Wound roll equal to or higher than the value listed, the target automatically suffers a Wound, regardless of its Toughness. The controlling player may choose to resolve these Wounds at AP 2 instead of the weapon’s normal AP value.
Similarly, if a model makes a Shooting Attack with a weapon that has the Rending special rule, a To Wound roll of equal to or greater than the listed value wounds automatically, regardless of Toughness, and is resolved at AP 2.
In either case, against Vehicles each Armour Penetration roll of equal to or greater than the listed value allows a further D3 to be rolled, with the result added to the total Strength of the attack. These Hits are not resolved at AP 2, but are instead resolved using the weapon’s AP value.
For example, a model with the Rending (5+) special rule that rolls To Wound against a non-Vehicle model will wound automatically on the roll of a 5+, and the attacking player has the choice of using an AP value of 2 instead of the AP value of their weapon.