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Pull the lever. It's the right thing to do.
― In-game description

The Trolley Problem is a legendary fusion rifle added in The Dark Below.

Sources[]

The Trolley Problem can be retrieved from one of the following activities/vendors:

Crucible Quartermaster source icon Crucible Quartermaster
Arcite 99-40, the Crucible Quartermaster, sometimes sells this item in the Tower.

Upgrades[]

The Trolley Problem can also be upgraded with the following perks:

Column 0[]

Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
Void Damage perk icon Void Damage
This weapon causes Void Damage.
Solar Damage perk icon Solar Damage
This weapon causes Solar Damage.
Arc Damage perk icon Arc Damage
This weapon causes Arc Damage.

Column 1[]

Random perk icon Randomly Selected Perk
This could be one of four randomly selected perks.
SteadyHand IS perk icon SteadyHand IS
Stable sight.

Optimized for excellent recoil control.

QuickDraw IS perk icon QuickDraw IS
Agile sight.

Lightning-fast handling.

Red Dot-ORS perk icon Red Dot-ORS
Accurized sight.

For precise fire.

Red Dot-ORES perk icon Red Dot-ORES
Flexible sight.

Enhances handling, range, and recoil control.

Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
SureShot IS perk icon SureShot IS
Snapshot sight.

Excellent handling. Superb target acquisition.

TrueSight IS perk icon TrueSight IS
Flexible sight.

Light, with good recoil control. Strong target acquisition.

Red Dot-OES perk icon Red Dot-OES
Agile sight.

For smooth engagement in close quarters.

Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
FastDraw IS perk icon FastDraw IS
Standard sight.

A lightweight design, good for recoil control.

Red Dot-OAS perk icon Red Dot-OAS
Snapshot sight.

Enhanced target acquisition.

Red Dot-ORS1 perk icon Red Dot-ORS1
Precision sight.

Enhanced range.

Column 2[]

Random perk icon Randomly Selected Perk
This could be one of six randomly selected perks.
Double Down perk icon Double Down
On initial spawn only, this weapon gains additional ammo.
Hip Fire perk icon Hip Fire
This weapon has bonus accuracy while firing from the hip.
Performance Bonus perk icon Performance Bonus
Kills with this weapon have the chance to grant bonus reserve ammo.
Rangefinder perk icon Rangefinder
Aiming this weapon increases its effective range.
Vacuum perk icon Vacuum
Increases the pick-up radius of ammo drops for this weapon.
Spray and Play perk icon Spray and Play
Increases the reload speed of this weapon when its mag is empty.

Column 3[]

Upgrade Damage perk icon Upgrade Damage
Increases Attack Power, allowing this weapon to cause more damage.

Column 4[]

Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
Quickdraw perk icon Quickdraw
This weapon can be drawn unbelievably fast.
Flared Magwell perk icon Flared Magwell
Reload this weapon even faster.
Single Point Sling perk icon Single Point Sling
Switch weapons faster. Move quicker while aiming.
Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
Perfect Balance perk icon Perfect Balance
This weapon has extremely low recoil.
Accelerated Coils perk icon Accelerated Coils
Reduces weapon charge time in exchange for slightly decreased damage.
Send It perk icon Send It
Increases range and accuracy.

Harder to handle. Decreases carried Ammo capacity.

Random perk icon Randomly Selected Perk
This could be one of three randomly selected perks.
Enhanced Battery perk icon Enhanced Battery
Increases magazine size.
Armor Piercing Rounds perk icon Armor Piercing Rounds
These iridium-core rounds overpenetrate targets.

Their mass slows down weapon handling.

Lightweight perk icon Lightweight
When held, this weapon grants +2 character Agility.

Column 5[]

Random perk icon Randomly Selected Perk
This could be one of five randomly selected perks.
Cascade perk icon Cascade
Melee kills automatically reload a portion of this weapon's magazine.
Grenadier perk icon Grenadier
Kills with this weapon reduce the cooldown of your grenade.
Feeding Frenzy perk icon Feeding Frenzy
Kills with this weapon increase reload speed for a short time.
Last Resort perk icon Last Resort
This weapon handles and reloads faster when the wielder is the last living player of their Fireteam.
Kneepads perk icon Kneepads
Slide further while this weapon is equipped.

Column 6[]

Upgrade Damage perk icon Upgrade Damage
Increases Attack Power, allowing this weapon to cause more damage.

Column 7[]

Upgrade Damage perk icon Upgrade Damage
Increases Attack Power, allowing this weapon to cause more damage.
Upgrade Damage perk icon Upgrade Damage
Increases Attack Power, allowing this weapon to cause more damage.
Upgrade Damage perk icon Upgrade Damage
Increases Attack Power, allowing this weapon to cause more damage.

Removed Perks[]

The Trolley Problem previously held one of the following perks prior to a Destiny update:

Ascend icon Ascend
Increases the Attack value of this weapon to the highest available in Year 1.
Secret Round icon Who's Next?
A kill with the final round in the magazine increases reload speed.

Gallery[]

References[]

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