Wizard Arcane Spell Failure and 'Mage Bullets'

[MC Templar]

Simple question, does the Arcane spell failure apply to the Mage bullets ability of the Arcane Gun?

Mage Bullets:

Mage Bullets (Su): A spellslinger is adept at transferring spell energy into his arcane gun attacks. As a swift action, he can sacrifice a spell and transform that energy into a weapon bonus equal to the level of the spell sacrificed on a single barrel of his firearm. With that weapon bonus the spellslinger can apply any of the following to his arcane bond: enhancement bonuses (up to +5) and dancing, defending, distance, flaming, flaming burst, frost, ghost touch, icy burst, merciful, seeking, shock, shocking burst, spell storing, thundering, vicious, and wounding. An arcane gun gains no benefit from having two of the same weapon special abilities on the same barrel. The effect of the mage bullets ability lasts for a number of minutes equal to the level of the spell sacrificed, or until this ability is used again to assign the barrel different enhancements. This ability replaces cantrips, but the spellslinger gains the detect magic and read magic cantrips and places them in his spellbook. He can cast either of these as 1st-level spells.

Arcane Spell Failure:

"Arcane Spell Failure Chance: Armor interferes with the gestures that a spellcaster must make to cast an arcane spell that has a somatic component. Arcane spellcasters face the possibility of arcane spell failure if they're wearing armor."

How do I determine if using Mage bullets requires a somatic component, or does Arcane spell failure apply to all Wizard class abilities regardless of somatics?

I am researching the viability of an arcane gun/ myrmidarch mash up, and when I ran a search on the forums for threads and build ideas I couldn't find this covered. I apologize if this was asked and answered before.

[Castarr4]

It's not a spell, so arcane spell failure chance doesn't apply to it. It's a supernatural ability, as indicated by (Su).

[Gauss]

CRB p221 on Spell-like Abilities wrote:

Spell-Like Abilities: Usually, a spell-like ability works just like the spell of that name. A spell-like ability has no verbal, somatic, or material component, nor does it require a focus. The user activates it mentally. Armor never affects a spell-like ability’s use, even if the ability resembles an arcane spell with a somatic component.

CRB p221 on Supernatural Abilities wrote:

These can’t be disrupted in combat and generally don’t provoke attacks of opportunity. They aren’t subject to spell resistance, counterspells, or dispel magic, and don’t function in antimagic areas.

As you can see Spell-like abilities spells out that even if they mimic spells they are not affected by armor (no arcane spell failure). Since supernatural abilities do not even mimic spells they do not need to make that statement.

Mage Bullets is a supernatural ability, thus no arcane spell failure.

- Gauss

[MC Templar]

Excellent, thanks guys