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Fallout 4 Mods
Database

Looking for receivers, barrels, linings and other gear mods? Every weapon and armor piece page lists the mods it takes, slot by slot, with the stats updating as you pick them.

Legendary Weapon Effects

Legendary effects that can roll on weapons.
Assassin's
Does 50% more damage against humans.
Berserker's
Does more damage the lower your Armor Resistance.
Blazing
25% chance to deal 50 Fire damage on a successful block.
Bloodied
Does more damage the lower your health is.
Cavalier's
Take 15% less damage while blocking or sprinting.
Charged
10% chance to deal 100 Electrical damage on a successful block.
Crippling
50% more limb damage.
Deadeye
Time slows down for a moment while aiming.
Defiant
The final shot in the magazine deals twice the normal damage.
Duelist's
25% chance to disarm attackers on a successful block.
Enraging
Critical hits cause target to frenzy.
Explosive
Bullets explode on impact doing 15 points area effect damage.
Exterminator's
Does 50% more damage against Mirelurks and bugs.
Freezing
Does 10 points cryo damage and will freeze targets on critical hits.
Frigid
20% chance to freeze the enemy when you block their attack.
Furious
Increased damage after each consecutive hit on the same target.
Ghoul Slayer's
Does 50% more damage against ghouls.
Hitman's
+10% damage while aiming.
Hunter's
Does 50% more damage against animals.
Incendiary
Sets target on fire for 15 points of damage.
Instigating
Does double damage if the target is at full health.
Irradiated
Does 50 points additional radiation damage.
Junkie's
Does increasing amounts of damage the more withdrawal effects you are suffering.
Kneecapper
20% chance to cripple the target's leg.
Lucky Weapon
Critical shots do double damage and the critical meter fills 15% faster.
Mutant Slayer's
Does 50% more damage against super mutants.
Never Ending
Unlimited ammo capacity.
Nimble
75% faster movement while aiming.
Nocturnal
Does increasing amounts of damage as the night grows longer and less damage during the day.
Penetrating
Ignores 30% of the target's damage and energy resistance.
Plasma Infused
Adds 10 points of energy damage and can turn enemies into goo.
Poisoner's
Target is poisoned for 10 seconds.
Powerful
25% more damage.
Quickdraw
Costs 25% less Action Points.
Rapid
25% faster fire rate, 15% faster reload.
Relentless
Refills your Action Points on a Critical Hit.
Resilient
+150 damage resistance while reloading.
Resolute
Time slows down for a moment when chambering the final round in the magazine.
Sentinel's
Take 15% less damage while standing and not moving.
Staggering
Chance to stagger on hit.
Stalker's
If you are not yet in combat, increases VATS accuracy but costs more AP.
Steadfast
+50 damage resistance while aiming.
Troubleshooter's
Does 50% more damage against robots.
Two Shot
Shoots an additional projectile.
VATS Enhanced
Improved VATS hit chance, 25% less Action Point cost.
VATS Enhanced
40% less Action Point cost.
Violent
+25% damage and limb damage, but has more recoil.
Wounding
Targets bleed for 25 points of additional damage.

Legendary Armor Effects

Legendary effects that can roll on armor and power armor.
Acrobat's
Reduces falling damage by 50%.
Assassin's
Reduces damage from humans by 15%.
Auto Stim
Automatically use a Stimpak when hit while health is 25% or less, once every 60 seconds.
Bolstering
Grants increasing energy and damage resistance the lower your health (up to +35).
Cavalier's
Reduces damage while blocking or sprinting by 15%.
Chameleon
Enemies have a harder time detecting you, while you're sneaking and not moving.
Cloaking
Being hit in melee generates a Stealth Field once per 60 seconds.
Cryogenic
10% chance to freeze melee attackers, once every 20 seconds.
Cunning
+1 Agility and Perception.
Duelist's
10% chance to disarm melee attacker on hit.
Exterminator's
Reduces damage from Mirelurks and bugs by 15%.
Fortifying
+1 Strength and Endurance.
Freefall
Prevents falling damage.
Ghoul Slayer's
Reduces damage from ghouls by 15%.
Hunter's
Reduces damage from animals by 15%.
Incendiary
30% chance to ignite melee attackers, once every 20 seconds.
Lucky
+2 Luck.
Martyr's
Temporarily slows time during combat when you are at 20% or less health.
Mutant Slayer's
Reduces damage from Super Mutants by 15%.
Poisoner's
+25 poison resistance.
Powered
Increases Action Point refresh speed.
Punishing
Reflects 10% of melee damage back on attacker.
Rad Powered
Grants additional Strength the higher your rads.
Safecracker's
Increases size of sweet-spot while picking locks.
Sharp
+1 Charisma and Intelligence.
Sprinter's
Increases wearer's movement speed by 10%.
Titan's
Reduces damage while standing and not moving by 15%.
Troubleshooter's
Reduces damage from robots by 15%.
Unyielding
+3 to all stats when you are at 25% or less health.
VATS Enhanced
10% reduction in Action Point costs in VATS.