Boost Modulation Feat 12
Source Pathfinder Guns & Gears
Prerequisites offensive boost
You aren't satisfied with keeping to just one kind of boost from your constant tinkering, so you've learned to modulate between several possibilities at once. Choose two additional offensive boosts. You can use an Interact action to change the offensive boost currently affecting your weapon, choosing between the one you chose for the class feature and the two you chose for this modification. If your weapon has the modular trait, you can swap the offensive boost as part of the Interact action you take to use that trait.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
InventorThis indicates abilities from the inventor class.
ManipulateYou must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.