Rain hell on the enemy with this handheld cluster-rocket launcher

The Kulstar is a Grineer-built torpedo/cluster bomb launcher that was introduced in Update 17.0. Once its torpedo comes in contact with an enemy or a surface, or if the player manually detonates it with Alternate Fire, it detonates and fragments into 3 smaller bomblets, which spread from the point of impact, also exploding on impact. This makes the Kulstar ideal for dealing with tightly grouped enemies.

This weapon can be sold for Credits64.png5,000.

Manufacturing Requirements
Time: 24 hrs
MarketIcon.png Market Price: Platinum64.png 190 Blueprint2.svg Blueprints Price:Credits64.png40,000

Characteristics[edit | edit source]

This weapon deals Blast b.png Blast damage.


  • Very high total damage.
    • Rocket impacts have high Impact b.svg Impact damage — effective against shields.
    • Explosions and cluster bombs have innate Blast b.png Blast damage — effective against shields.
  • Rocket impacts release 3 cluster bombs that cover a large range.
  • Rocket projectile can be manually detonated by pressing the Alternate Fire key/button — effective against enemies that have taken cover.
  • Very high accuracy.
  • Has a Vazarin Pol.svg polarity.


  • No Puncture b.svg Puncture or Slash b.svg Slash damage - less effective against health.
    • Does not benefit from Puncture b.svg Puncture or Slash b.svg Slash mods.
      • The physical contact rocket deals only Impact b.svg Impact damage, while explosion and cluster bombs deals only Blast b.png Blast damage, therefore the explosion and cluster bombs do not benefit from any physical damage mods.
  • Capable of high amounts of self damage. Additionally cluster bombs make avoiding self damage difficult.
  • Very high recoil when not aiming.
  • Rockets have travel time, making it harder to hit targets from a distance.
  • Extremely ammo inefficient.
    • Extremely small magazine size of just 3 rounds; requires frequent reloading.
    • Extremely low ammo capacity of just 6 rounds; requires just 3 reloads to fully deplete all ammo reserves.

Notes[edit | edit source]

  • The Kulstar possesses an unusual difference in recoil between hipfire and aiming. When hipfiring, the Kulstar has very high recoil per shot, violently shaking aim, while stopping to aim will drastically reduce the recoil. 

Trivia[edit | edit source]

  • The Kulstar was first presented in the Echoes of the Sentients Highlight Video.
  • The Kulstar could be an intentional mispronunciation of the word "Cluster", which would be fitting given the Kulstar's projectiles are cluster bombs.
    • The bomblets themselves resemble naval contact mines. While smaller than the torpedoes, they are much higher resolution as they are recoloured versions of the mines from the Grineer Sealab tileset.

Media[edit | edit source]

Patch History[edit | edit source]

Update 22.12

  • Mastery Rank increased from 4 to 5.
  • Changed contact damage from Explosion to Impact.
  • Added guaranteed Knockdown to contact damage.
  • Contact damage increased from 175 to 200.
  • Radial damage increased from 200 to 300.
  • Status chance increased from 10% to 19%.
  • Critical chance increased from 5% to 17%.
  • Critical damage increased from 2x to 2.3x.
  • Improved projectile trail FX of the bomblets after the initial explosion.
  • Ammo capacity decreased from 30 to 15.
  • Added recoil.
  • Decreased accuracy.

Update 20.0

  • Arsenal now includes alt-fire stats for the Kulstar.

Update: The Index Preview

  • Increased damage of Kulstar in Conclave.
  • Kulstar projectiles are now more visible in Conclave.

Update 18.5

  • Increased AoE damage of the Kulstar in Conclave.
  • Increased the damage of the Kulstar in Conclave.

Hotfix 18.4.10

  • Removed the headshot multiplier from the Kulstar in Conclave.
  • The Kulstar's explosive damage no longer ignores cover in Conclave.

Hotfix 17.2.2

  • Reduced the number of visual particle FX on the Kulstar's explosions.

Hotfix 17.0.5

  • Reduced the damage of the Kulstar in PvP.

Hotfix 17.0.3

  • Fixed the Kulstar's secondary fire hitting enemies outside of Limbo's rift while Limbo is riftwalking.

Update 17.0

  • Introduced.
Last updated: Hotfix 23.2.1

See also[edit | edit source]

  • CorpusHandRocket.png Angstrum, a similar secondary rocket launcher.
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