Kaoson
Updated: Feb 06, 2026
Borderlands 4

Borderlands 4Kaoson

Twice the power!
  • Content
    Base Game
  • Weapon Type
    SMG
  • Rarity
    Legendary
  • Manufacturer
    Vladof
  • Elements
    Non-Elemental
    Fire
    Shock
    Corrosive
    Cryo
    Radiation

KaosonAll Details

Max DPS
Kaoson (SMG-BL4)
Copy Kaoson Code
About
Variants
Parts
Changelog

Kaoson - About

The Legendary SMG Kaoson is manufactured by Vladof and comes from the Borderlands 4 Base Game.

Kaoson - Unique Ability

For 2 Ammo, the Kaoson fires 2 sticky rockets in a linear trajectory, dealing 7% [Element] Splash Gun Damage.

On Reload, mode or weapon swap, all stuck rockets consecutively explode, each dealing 70% [Element] Splash Gun Damage.
Each stuck rocket increases all others' damage on the same target by +2/3/4%.

The Kaoson always comes with Torgue and Atlas-Licensed Parts.

Kaoson - Variants

  • Elements
    Non-Elemental
    Fire
    Shock
    Corrosive
    Cryo
    Radiation
  • Listed Projectiles
  • Shot Cost
  • Weapon Parts
    variants
    fixed parts
  • Firmware
    possible
    none
  • Splash Anoints
    possible
    none

Kaoson - SMG 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.

Kaoson - Changelog

KaosonHow to get it?

Base Game
General Farming Guidance

To collect and equip the Legendary Kaoson, you need to own the BL4 Base Game.

Base Game Items in Borderlands 4 are often obtainable from many sources, including those in DLCs. Here’s your quick start guide:

Farming Preparations

  1. Identify the Best Source: The Sources below are generally ranked from best to worst. Make sure to complete any required quests and be aware of Source Restrictions.
  2. Locate the Source: Make sure you have unlocked the Location.
  3. Equip Your Character: Equip your character to easily overcome enemies.
  4. Set Spawn Point: Locate the nearest Save Station to use as your spawn point.

Bonus Tips

  • Combine Runs: Get more loot per run by integrating nearby sources into your farming route.
  • Track Progress: Track your runs to more precisely predict drops and more clearly monitor progress. Additionally, time your runs to see how tweaks affect your farming efficiency.
  • Speed it up: Explore shortcuts and boost your movement speed to minimize travel time. Also, aim to shorten your time to kill with higher DPS or big damage bursts.
  • Realistic Expectations: Be patient and persistent when farming. Despite precise, verified drop rates, your actual runs might exceed or fall short of inferred expectations.

KaosonDrop Rates

  • Origo
    9%
Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%

KaosonAll Sources

Primordial Guardian Origo
boss

Primordial Guardian Origo

Boss
Vault of Origo