masseffect
Disambiguous This article is about weapon mods and their functions in Mass Effect 3. For weapon upgrades in Mass Effect, see Weapon Upgrades. For weapon upgrades in Mass Effect 2, see Research. For upgrades generally, see Upgrades. For Mods and their functions in Mass Effect: Andromeda, see Mods.
See also: Armor#Mass Effect 3, Armor Customization (Mass Effect 3)
Weapon modification bench
Weapon modification bench

In Mass Effect 3, Weapon Mods are used to augment any of the five types of standard weapon: assault rifles, shotguns, sniper rifles, submachine guns, and heavy pistols. Available mods include high-caliber barrels, scopes, and bayonet attachments, among others. Only two mods can be applied to a weapon at a time, and the same mod cannot be applied twice to a single weapon. For additional information on the various mods see the notes section below.

Once a weapon mod is found, it may be applied to any and all of the weapons of the applicable type at a weapon bench. Finding another instance of a mod the player already possesses will immediately upgrade that mod to the next level (even on mods fixed to currently active weapons during missions). Also, shops will always carry at least two upgrades of a particular mod, though sometimes split between different vendors.

For where to obtain the various weapon mods and other equipment in Mass Effect 3, see Equipment Guide (Mass Effect 3).

Legendary Edition: Any listed single-player DLC requirements for obtaining mods are only applicable if not playing Mass Effect Legendary Edition, as all previously available single-player DLC is included in Legendary Edition by default. Orange notations are present where applicable to draw attention to this.

Assault Rifle Upgrades

For where to obtain these upgrades, see Equipment Guide (Mass Effect 3)#Assault Rifle Mods.

Assault Rifle Stability Damper

Distributes recoil with sliding system of counterweights compatible with kinetic coil generators. Reduces weapon kickback.

Changes the color of the weapon's handle and stock depending on level of mod.

Level I II III IV V
Weapon Stability +30.00% +40.00% +50.00% +60.00% +70.00%
ME3 Upgrade Assault Rifle Stability Damper

Assault Rifle Magazine Upgrade

Increases magazine capacity, allowing more shots before reload.

Does not increase spare ammunition. Changes the color of the weapon's body depending on weapon and level of mod.

Level I II III IV V
Rounds per Magazine +40.00% +50.00% +60.00% +70.00% +80.00%
ME3 Upgrade Assault Rifle Magazine Upgrade

Assault Rifle Piercing Mod

Capacitor boosts kinetic coil generators, increasing shot penetration.

Changes the color of the weapon's lights depending on level of mod.

Note: Cannot be equipped with Ultralight Materials.

Level I II III IV V
Piercing Depth 0.50 m 0.65 m 0.80 m 0.95 m 1.10 m
Piercing Damage 40.00% 45.00% 50.00% 55.00% 60.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Upgrade Assault Rifle Penetration Module

Assault Rifle Extended Barrel

Lengthens barrel, creating greater bullet velocity and impact.

Places a visible barrel extension on the weapon with a different appearance depending on the level of mod.

Note: Cannot be equipped with High-Velocity Barrel.

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Upgrade Assault Rifle Extended Barrel

Assault Rifle Precision Scope

Simple 4x optical scope to enhance stability while zoomed. Increases accuracy while moving and taking damage.

Places a visible scope atop the weapon with a different appearance depending on the level of mod. The benefits to accuracy only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 Upgrade Assault Rifle Precision Scope

Assault Rifle Omni-Blade

Attach an omni-blade to the weapon for increased melee damage.

Places a visible omni-bayonet on the weapon.

Note: Requires Mass Effect 3: Leviathan (or LE) in single-player and Mass Effect 3: Earth in multiplayer.

Level I II III IV V
Melee Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Assault Rifle Omni-Blade

Assault Rifle Thermal Scope

Reveal enemies through walls and smoke with a 4x optical scope and enhance stability and accuracy while zoomed.

Increases weapon weight by 50%.

Places a visible thermal scope on the weapon. Also reveals invisible enemies. The benefits to accuracy and vision only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 Assault Rifle Thermal Scope

Assault Rifle High-Velocity Barrel

Superior kinetic coils increase shot penetration.

Increases weapon weight by 50%.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Piercing Depth 0.75 m 0.90 m 1.05 m 1.20 m 1.35 m
Piercing Damage 40.00% 45.00% 50.00% 55.00% 60.00%
Defenses Ignored 50.00% 60.00% 70.00% 80.00% 90.00%
ME3 Assault Rifle High-Velocity Barrel

Assault Rifle Ultralight Materials

Superior lightweight alloys replace weapon parts, making weapon less obtrusive and easier to handle.

Changes the color of the weapon's body depending on weapon and level of mod.

Notes:

Level I II III IV V
Weight -8.00% -10.00% -12.00% -14.00% -15.00%
ME3 SMG Ultralight Materials

Heavy Pistol Upgrades

For where to obtain these upgrades, see Equipment Guide (Mass Effect 3)#Heavy Pistol Mods.

Pistol Melee Stunner

Small attachment to muzzle, causing massive damage to meleed targets.

Adds a visible stunner beneath the barrel. Also changes the color of the weapon's handle depending on level of mod. Adds electrical visual and sound effects to melee attacks that hit enemy with the gun.

Level I II III IV V
Melee Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Heavy Pistol Melee Stunner

Pistol Piercing Mod

Capacitor boosts kinetic coil generators, increasing shot penetration.

Changes the color of the weapon's lights depending on level of mod.

Level I II III IV V
Piercing Depth 0.50 m 0.65 m 0.80 m 0.95 m 1.10 m
Piercing Damage 40.00% 45.00% 50.00% 55.00% 60.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Upgrade Assault Rifle Penetration Module

Pistol Magazine Upgrade

Increases magazine capacity, allowing more shots before reload.

Does not increase spare ammunition. Changes the color of the weapon's body depending on weapon and level of mod.

Note: Cannot be equipped with Ultralight Materials.

Level I II III IV V
Rounds per Magazine +40.00% +50.00% +60.00% +70.00% +80.00%
ME3 Upgrade Assault Rifle Magazine Upgrade

Pistol High-Caliber Barrel

Allows wider projectiles, causing more trauma on impact. Ballistically optimized to maintain penetrative power.

Places a visible barrel extension on the weapon.

Note: Cannot be equipped with Heavy Barrel or Cranial Trauma System.

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 SMG High Caliber Barrel

Pistol Scope

Simple 2x optical scope enhances stability while zoomed. Increases accuracy while moving and taking damage.

Places a visible scope atop the weapon. The benefits to accuracy only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 SMG Scope Upgrade

Pistol Ultralight Materials

Superior lightweight alloys replace weapon parts, making the weapon less obtrusive and easier to handle.

Changes the color of the weapon's body depending on weapon and level of mod.

Notes:

Level I II III IV V
Weight -30.00% -35.00% -40.00% -45.00% -50.00%
ME3 SMG Ultralight Materials

Pistol Heavy Barrel

A pistol barrel that produces and withstands extreme kinetic and thermal energy.

Increases weapon weight by 50%.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Damage +20.00% +25.00% +30.00% +35.00% +40.00%
ME3 Pistol Heavy Barrel

Pistol Cranial Trauma System

Increase headshot lethality by balancing barrel calibration so that ammunition pierces bone and explodes in soft tissue.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Headshot Damage +20.00% +25.00% +30.00% +35.00% +40.00%
ME3 Pistol Cranial Trauma Systeme

Pistol Power Magnifier

Generator designed to enhance the effectiveness of tech or biotic attacks.

Places a visible generator atop the weapon. Despite the in-game description, the damage of powers that are neither tech or biotic are also enhanced.

Notes:

Level I II III IV V
Power Damage +10.00% +15.00% +20.00% +25.00% +30.00%
ME3 Power Boost

Shotgun Upgrades

For where to obtain these upgrades, see Equipment Guide (Mass Effect 3)#Shotgun Mods.

Shotgun Spare Thermal Clip

Adds sockets to raise thermal clip capacity, increasing number of spare shots.

Changes the color of the weapon's handle and stock depending on level of mod.

Level I II III IV V
Spare Shot Capacity +50.00% +60.00% +70.00% +80.00% +90.00%
ME3 Upgrade Sniper Rifle Spare Thermal Clip

Shotgun Shredder Mod

Capacitor boosts kinetic coil generators, increasing shot penetration.

Changes the color of the weapon's lights depending on level of mod.

Level I II III IV V
Piercing Depth 0.25 m 0.35 m 0.45 m 0.55 m 0.65 m
Piercing Damage 40.00% 45.00% 50.00% 55.00% 60.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Shotgun Shredder Module

Shotgun Blade Attachment

Tungsten carbide bayonet with recessed edge for increased melee damage.

Places a visible bayonet underneath the barrel. Adds slashing sound to melee attacks that hit with the gun.

Note: Cannot be equipped with Omni-blade.

Level I II III IV V
Melee Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Shotgun Blade Attachment

Shotgun High Caliber Barrel

Allows wider projectiles, causing more trauma on impact. Ballistically optimized to retain penetrative power.

Places a visible barrel extension on the weapon.

Note: Cannot be equipped with High-Velocity Barrel.

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Shotgun High Caliber Barrel

Shotgun Smart Choke

Servo motors hooked up to adjustable system tighten or loosen pellet spread for maximum accuracy.

Changes the color of the weapon's body depending on weapon and level of mod.

Note: Cannot be equipped with Ultralight Materials.

Level I II III IV V
Accuracy +30.00% +35.00% +40.00% +45.00% +50.00%
ME3 Shotgun Smart Choke

Shotgun Omni-Blade

Attach an omni-blade to the weapon for increased melee damage.

Increases weapon weight by 50%.

Places a visible omni-blade on the weapon.

Notes:

Level I II III IV V
Melee Damage +30.00% +35.00% +40.00% +45.00% +50.00%
ME3 Assault Rifle Omni-Blade

Shotgun High-Velocity Barrel

Superior kinetic coils increase shot penetration.

Increases weapon weight by 50%.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
Piercing Depth 0.25 m 0.35 m 0.45 m 0.55 m 0.65 m
Piercing Damage 50.00% 55.00% 60.00% 65.00% 70.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Shotgun High-Velocity Barrel

Shotgun Ultralight Materials

Superior lightweight alloys replace weapon parts, making weapon less obtrusive and easier to handle.

Changes the color of the weapon's body depending on weapon and level of mod.

Notes:

Level I II III IV V
Weight -8.00% -10.00% -12.00% -14.00% -15.00%
ME3 SMG Ultralight Materials

Sniper Rifle Upgrades

For where to obtain these upgrades, see Equipment Guide (Mass Effect 3)#Sniper Rifle Mods.

Sniper Rifle Concentration Mod

Biometric sensors and auto-targeting software adjust to the user's pulse and breath rate, assisting aim.

Changes the color of the weapon's lights depending on level of mod.

Notes:

Level I II III IV V
Damage During Dilation +5.00% +7.50% +10.00% +12.50% +15.00%
Time Dilation 25.00% 27.50% 30.00% 32.50% 35.00%
Time Dilation Duration 1.50 s 1.75 s 2.00 s 2.25 s 2.50 s
ME3 Upgrade Sniper Rifle Concentration Module

Sniper Rifle Spare Thermal Clip

Adds sockets to increase thermal clip capacity, increasing number of spare shots.

Changes the color of the weapon's handle and stock depending on level of mod.

Level I II III IV V
Spare Shot Capacity +50.00% +60.00% +70.00% +80.00% +90.00%
ME3 Upgrade Sniper Rifle Spare Thermal Clip

Sniper Rifle Extended Barrel

Lengthens barrel, creating greater bullet velocity and impact.

Places a visible barrel extension on the weapon.

Note: Cannot be equipped with High-Velocity Barrel.

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 Upgrade Sniper Rifle Extended Barrel

Sniper Rifle Piercing Mod

Capacitor boosts kinetic coil generators, increasing shot penetration.

Changes the color of the weapon's body depending on weapon and level of mod.

Level I II III IV V
Piercing Depth 0.75 m 0.90 m 1.05 m 1.20 m 1.35 m
Piercing Damage 50.00% 55.00% 60.00% 65.00% 70.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Upgrade Assault Rifle Penetration Module

Sniper Rifle Enhanced Scope

Stability-enhancing scope increases accuracy while moving and taking damage. Highlights targets through smoke.

Increases accuracy and helps aim through smoke.

Adds visible extension to scope. The benefits to accuracy and vision only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 Upgrade Sniper Rifle Enhanced Scope

Sniper Rifle Thermal Scope

Reveal enemies through walls and smoke with a 4x optical scope and enhance stability and accuracy while zoomed.

Increases weapon weight by 50%.

Places a visible scope extension on the weapon. Also reveals invisible enemies. The benefits to accuracy and vision only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 Sniper Rifle Thermal Scope

Sniper Rifle High-Velocity Barrel

Superior kinetic coils increase shot penetration.

Increases weapon weight by 50%.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
Piercing Depth 0.50 m 0.65 m 0.80 m 0.95 m 1.10 m
Piercing Damage 50.00% 55.00% 60.00% 65.00% 70.00%
Defenses Ignored 25.00% 35.00% 45.00% 55.00% 65.00%
ME3 Sniper Rifle High-Velocity Barrel

Sniper Rifle Ultralight Materials

Superior lightweight alloys replace weapon parts, making weapon less obtrusive and easier to handle.

Changes the color of the weapon's body depending on weapon and level of mod.

Note: Requires Mass Effect 3: Citadel (or LE) in single-player and Mass Effect 3: Reckoning in multiplayer.

Level I II III IV V
Weight -8.00% -10.00% -12.00% -14.00% -15.00%
ME3 SMG Ultralight Materials

Submachine Gun Upgrades

For where to obtain these upgrades, see Equipment Guide (Mass Effect 3)#Submachine Gun Mods.

SMG Ultralight Materials

Superior lightweight alloys replace weapon parts, making weapon less obtrusive and easier to handle.

Changes the color of the weapon's body depending on weapon and level of mod.

Note: Cannot be equipped with Recoil System.

Level I II III IV V
Weight -50.00% -60.00% -70.00% -80.00% -90.00%
ME3 SMG Ultralight Materials

SMG Magazine Upgrade

Increases magazine capacity, allowing more shots before reload.

Does not increase spare ammunition. Changes the color of the weapon's handle and stock depending on level of mod.

Level I II III IV V
Rounds per Magazine +40.00% +50.00% +60.00% +70.00% +80.00%
ME3 Upgrade Assault Rifle Magazine Upgrade

SMG High Caliber Barrel

Allows wider projectiles, causing more trauma on impact. Ballistically optimized to retain penetrative power.

Places a visible barrel extension on the weapon.

Note: Cannot be equipped with High-Velocity Barrel.

Level I II III IV V
Damage +15.00% +17.50% +20.00% +22.50% +25.00%
ME3 SMG High Caliber Barrel

SMG Heat Sink

Increases heat conductivity of thermal clip receiver. Negates heat generated by some shots.

Changes the color of the weapon's lights depending on level of mod.

Level I II III IV V
Heat Negate Chance 25.00% 30.00% 35.00% 40.00% 45.00%
ME3 SMG Heat Sink

SMG Scope

Simple 2x optical scope enchances stability while zoomed. Increases accuracy while moving and taking damage.

Places a visible scope atop the weapon. The benefits to accuracy only apply when the scope is actively being used.

Notes:

Level I II III IV V
Accuracy +15.00% +20.00% +25.00% +30.00% +35.00%
ME3 SMG Scope Upgrade

SMG High-Velocity Barrel

Superior kinetic coils increase shot penetration.

Places a visible barrel extension on the weapon.

Notes:

Level I II III IV V
Piercing Depth 0.25 m 0.35 m 0.45 m 0.55 m 0.65 m
Piercing Damage 40.00% 45.00% 50.00% 55.00% 60.00%
Defenses Ignored 50.00% 60.00% 70.00% 80.00% 90.00%
ME3 SMG High-Velocity Barrel

SMG Recoil System

Increase weapon mass for a split second per shot by using an expert timing-VI to reduce weapon kick and improve aim

Changes the color of the weapon's body depending on weapon and level of mod.

Notes:

Level I II III IV V
Weapon Stability +30.00% +40.00% +50.00% +60.00% +70.00%
ME3 Upgrade Assault Rifle Stability Damper

SMG Power Magnifier

Generator designed to enhance the effectiveness of tech or biotic attacks.

Places a visible generator atop the weapon. Despite the in-game description, the damage of powers that are neither tech or biotic are also enhanced.

Notes:

Level I II III IV V
Power Damage +10.00% +15.00% +20.00% +25.00% +30.00%
ME3 Power Boost SMG

Player Notes

References