The Vault - Fallout Wiki

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The Vault - Fallout Wiki
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For the list of legendary weapon effects in Fallout 4, see Fallout 4 legendary weapon effects.
This page lists all weapon mods in Fallout 4.
  • The content is not described in full detail on this page. For details, please see the respective articles.
  • For weapon mods in other Fallout games, please see "Weapon mod".
  • For an overview of Fallout 4 content, please refer to "Fallout 4".

Modifying weapons in Fallout 4 is an integral part of the game, allowing the Sole Survivor to upgrade their weapons.


A laser rifle being modified

In Fallout 4, weapon modifications can be made to most weapons, including unique weapons. Weapons have different slots for customization, with varying amounts of slots and possible mods, depending on the base weapon. Weapons can be found with mods on them from enemies or various containers.

Weapons can be modified at a weapons workbench. Some mods may require certain perks, such as Gun Nut for the player to be able to craft the item. Mods can also be "salvaged" from other weapons, by replacing the mod with a different one. However, the salvaged mod can only be reattached to the same base weapon.

There are over 50 base weapons and over 700 different modifications that can be made at the weapons workbench, including different receivers, sights, barrels, stocks, magazines, and grips for projectile weapons alone. Melee weapons may be modified with different grips, materials, and bludgeoning or slicing attachments.


Please see the relevant weapon pages for a list of mods available for that weapon.

Every base weapon has a large number of modifications for the slots it offers, which directly alter various aspects: Damage, speed of aiming, magazine capacity, accuracy, and so on and so forth. Detailed mod tables have been posted on each of the weapon pages for the sake of brevity.