Faction Damage Mods increase damage done to all enemy types of the corresponding faction, including bosses. It is calculated as a total damage multiplier against the faction in question.

Faction mods increase the weapon's raw damage, and is apply a second time to damage over time (DoT) from status effects created by it, known as "double dipping". For complete mechanics see Status Effect.

There are a total of 16 regular faction mods, each having a primed variant. 4 mods ( Grineer,  Corpus,  Infested, and  Corrupted) for each of the 4 main weapon types (Rifle, Shotgun, Pistol and Melee). Damage is increased by 5% per rank, up to 30% for regular mods and 55% for primed ones. The base equip cost of each mod is 4 and they all have a polarity. Damage of Sacrificial mods is the same type as other faction mods.

Grineer, Corpus, and Infested faction mods have no effect on their Corrupted or  Narmer counterparts. For example,  Bane of Grineer will work on Lancer but not on Corrupted Lancer or Narmer Lancer.

List of Faction Mods

Slot \ Faction	Corpus	Grineer	Infested	Corrupted	Sentient
Rifle
Shotgun
Pistol
Melee
Railjack

Notes

• Faction damage mods for Infested, Corpus, and Grineer were added in Update 9.0 (2013-07-13), while Faction damage mods for Corrupted were added in Update 21.0 (2017-06-29).

Patch Notes