Overwatch with Fury of the First/Critical Hits

[Khorneeq]

Space Marines Terminators have Fury of the First rule which allows them to ignore modifiers to ballistic skill and hit roll.

Overwatch says only unmodified hit roll off 6 Hits.

Which takes precedence?

What if unit gets Critical Hits on roll of 5+(critical hits always hit the target)

Can this improve chances of hit while overwatching?

[Commander Dawnstar]

To quote the Rules Commentary document: "Modifiers are rules that change a numerical value from one value to another."

 

Overwatch making you hit only on unmodified 6s isn't a modifier as it isn't altering your BS or applying a penalty to your To Hit roll; it isn't setting you to BS 6+. There are no modifiers in play here, it's just that only unmodified 6s to hit matter for the purposes of the rule.

 

The Rules Commentary document also states that: "While resolving attacks using the Fire Overwatch Stratagem, Critical Hits are only ever scored on unmodified Hit rolls of 6."