Weapons workbench (Fallout 4)

The weapons workbench is a crafting station in Fallout 4. The Sole Survivor can use the workshop to attach and detach weapon mods.

When applying a weapon mod, the name of the weapon can change, even allowing to turn into a better variant, like making rifles from pistols.

To create a mod, the Sole Survivor needs proper materials, as well as the corresponding perks, Gun Nut for guns, Blacksmith for melee weapons and Science! for energetic weapons. Some mods requires two of the perks at once, such as night vision scopes mods for snipers.

There are two different versions of the weapons workbench found in Fallout 4. However, they are functionally identical in every way, and thus it does not matter which one is used under any circumstance.

Within settlements
These are associated with the Workbench for the settlement. The player character will not be able to access these until s/he is aligned with the settlement.
 * Sanctuary Hills
 * Red Rocket

With the second level of the Local Leader perk the Sole Survivor can craft weapons workbenches in other settlements.

Other locations
These can be used at any time by the player
 * One on the roof and another in the basement of Gunners plaza.
 * Inside Combat Zone.

Item & World manipulation
There are two versions of the weapons workbench available.