Weapon upgrades are attachments that enhance your weapons' performance. These include scopes for increased aim, extended magazines for more ammo, stocks for improved aim after moving, and laser sights for critical hit bonuses. Each weapon can typically equip two upgrades. Prioritize upgrades that complement your soldier's role and abilities. For example, a Sharpshooter benefits greatly from a scope.

Common Weapon Upgrades:
- Scope: +Aim.
- Extended Magazine: +Ammo Capacity.
- Stock: +Aim after moving.
- Laser Sight: +Critical Hit Chance.
- Hair Trigger: Chance for free action.
- Autoloader: Free reload.