Mods are hot-swappable enhancement items that can be added to weapons to fine-tune and tweak various properties. There are eight adjustable properties to a weapon, each with a contextual icon to match:
Weapon Properties
| Positive Effects | Types | Icon |
|---|---|---|
| Accuracy | Scope |
|
| Clip Size | Magazine |
|
| Damage | Barrel |
|
| Melee Damage | Melee Optimizer |
|
| Penetration/Penetration Distance | Receiver |
|
| Spare Ammo | Spare Clip |
|
| Stability | Stock |
|
| Weight (Reduce) | Ultra-Light Materials |
|
Like weapons and armor, mods dropped from enemies and sold by vendors are level-scaled. The higher your player level, the higher the rank of the mods you find, with increasing bonuses. Additionally, some mods (within the same rank) boost stats even more than usual, but with a sacrifice to another stat. These mods have distinct names—names with a modifying adjective to the component, such as “Heavy Magazine” (large clip-size bonus, but weight penalty) and “Long Barrel” (much greater damage, but less accuracy).
Most standard weapons can have two mods installed, while crafted weapons can potentially have four.