Updated: Sep 23, 2024

Borderlands 3O.P.Q. System

B.Y.O.B.B.

Content
Revenge of the Cartels
Weapon Type
Assault Rifle
Rarity
Legendary
Manufacturer
Atlas
Elements

O.P.Q. SystemAll Details

Max DPS

Copy O.P.Q. System Code

O.P.Q. System - About

The Legendary Assault Rifle O.P.Q. System is manufactured by Atlas and comes from the Borderlands 3 Revenge of the Cartels Event.

O.P.Q. System - Unique Ability

Can toggle between Assault Rifle and O.P.Q. System firing mode:

Assault Rifle
The OPQ's projectiles that hit an enemy have a chance to explode, dealing 100% Bonus Shock Splash Damage.

O.P.Q. System
Has 1 charge that takes a while to regenerate.
Deploys a drone that transforms into a flying copy of the OPQ.
The OPQ copy can also cause explosions that deal Shock Splash Damage.
It follows the player and attacks the same targets as the player.

O.P.Q. System - Variants

Elements
Listed Projectiles
Shot Cost
Weapon Parts
variants
fixed parts
Anointment
possible
none
Splash Anoints
possible
none

O.P.Q. System - Assault Rifle Parts

Weapons usually get one part per group, but sometimes multiple or none. Numbers in the top-right indicate the range of parts a group can have.
Parts usually have equal drop chances, or it's indicated nearby.

Body Accessory^2-3

Body_A^83.3%+10% Damage
Body_B^83.3%+10% Fire Rate
+50% Tracker Duration
Body_C^83.3%+10% Reload Speed
+15% Accuracy

Barrel Accessory^2-3

Barrel_2A^83.3%+10% Fire Rate
Barrel_2B^83.3%+10% Reload Speed
+10% Damage
Barrel_2C^83.3%+10% Damage

Magazine

Mag_1_{Mag Size: 22
Reload: 2.5s}+10% Damage
Mag_2_{Mag Size: 28
Reload: 2.8s}
Mag_3_{Mag Size: 34
Reload: 3.1s}-10% Damage

Grip

Grip_1-20% Accuracy Bloom
+5% Fire Rate
Grip_2+5% Reload Speed
+20% Accuracy
+25% Tracker Duration
Grip_3+10% Crit Damage
+10% Mag Size
-5% Damage
-10% Accuracy
Grip_4-15% Vertical Recoil
+5% Damage

Foregrip^0-1

Foregrip_1+10% Accuracy
+5% Damage
Foregrip_2-30% Sway
+5% Fire Rate
Foregrip_3+5% Reload Speed
-30% Accuracy Bloom
Foregrip_4+10% Crit Damage
+25% Tracker Duration

Scope

Scope_1_{1.5x Zoom}
Scope_2_{5.0x Zoom}
Scope_3_{2.9x Zoom}

O.P.Q. System - Changelog

O.P.Q. SystemHow to get it?

Revenge of the Cartels Event
General Farming Guidance

To collect and equip the Legendary O.P.Q. System, you need to own the BL3 Revenge of the Cartels Event.

Like all of the three Borderlands 3 events, Revenge of the Cartels was added to the base game on June 24, 2021.
You can enable one of the three events at a time in the main menu ▸ Play.

To efficiently farm the exclusive Revenge of the Cartel items, follow these steps:

Accept Maurice's quest near Hammerlock's room on Sanctuary III.
The quickest place to collect 30 Decoder Rings is at Carnivora's entrance.
Proceed to Villa Ultraviolet and defeat two mini-bosses. Those won't reappear in the final fight.
Joey Ultraviolet will spawn with two random mini-bosses.
To reroll them, exit to the main menu and reload the game.
To farm the desired mini-bosses, simply die or fast travel to respawn them.
As long as you don't kill Joey and stay in the game, the same mini-bosses will keep respawning.