Kulstar

Rain hell on the enemy with this handheld cluster-rocket launcher. Built as a secondary / flexible option for squad clear and mission pressure.

Signature

Kulstar is not a signature weapon — any frame can use it without a signature passive.

When to Pick

• You want a Pistol that fits a secondary / flexible play pattern.
• Your loadout needs what Kulstar does well — check Mission Usefulness below before investing Forma.
• You’re ready to Catalyze / Forma it if you plan to main it on Steel Path.

• Rocket Impact

  Impact 200

  Projectile · Crit 17% / 2.3× · Status 19% · Fire Rate 2 · Projectile 100

• Rocket Explosion

  Blast 300

  AoE · Crit 17% / 2.3× · Status 19% · Fire Rate 2 · Falloff 0–3.9m (−40%)

• Cluster Bombs

  Impact 75

  Projectile · Crit 17% / 2.3× · Status 19% · Fire Rate 2 · Projectile 8

• Cluster Bomb Explosion

  Blast 90

  AoE · Crit 17% / 2.3× · Status 19% · Fire Rate 2 · Falloff 0–3.9m (−40%)

• Rocket Impact (Projectile): Impact 200.0.
• Rocket Explosion (AoE): Blast 300.0.
• Cluster Bombs (Projectile): Impact 75.0.

Permanent investments on this weapon copy — separate from the Prime variant.

• Orokin CatalystCapacity

  Doubles mod capacity so endgame builds fit.

  Usually the first permanent upgrade on a weapon you plan to main.

• FormaPolarity

  Adds or changes polarities so matching mods cost half capacity.

  expect multiple Forma for a hungry config.

• Exilus Weapon AdapterSlot

  Unlocks utility options (Exilus on guns; melee focuses on stance polarity + utility mods).

  Install when you need ammo, handling, or QoL without sacrificing damage slots.

• Secondary Arcane AdapterArcane

  Lets you install a weapon arcane for a strong passive bonus.

  Worth it once the base mod config is already solid.

• Riven ModRiven

  Unique rolled mod. Disposition 1.3.

  Chase clean desirable stats; skip awkward negatives on low-disposition weapons.

Common building blocks for this gun — not a full ranked build, just the mods you’ll see most often.

• Galvanized Diffusion

  Multishot

  Secondary multishot backbone.

• Primed Pistol Gambit / Pistol Gambit

  Crit Chance

  Crit chance for secondary crit suites.

• Primed Target Cracker / Target Cracker

  Crit Damage

  Crit damage pair for Gambit.

• Galvanized Shot

  Status Damage

  Status-scaling secondary damage.

• Hornet Strike

  Base Damage

  Flat secondary damage foundation.

• Elemental dual-stats

  Elemental

  Viral + Heat remains a safe default.

• Secondary Deadhead / Merciless (Arcane)

  Arcane

  Primary-style weapon arcanes on primed secondary builds.

• Pistol Ammo Mutation

  QoL

  Ammo economy for high fire-rate pistols.

Multishot

Usually the highest value damage slot — more projectiles, more procs, more clear.

Critical

Stack crit chance/damage when the weapon’s crit stats justify a crit suite.

Elemental

Faction/elemental lines for Steel Path; Viral+Heat is a safe default on many guns.

Fire Rate

Fire rate raises DPS but burns ammo — pair with reload/ammo economy when needed.

Check the How to Get table for blueprint / part drop sources.