Arca Plasmor

Stagger targets with blasts from this Corpus engineered plasma shotgun. Built as a shotgun / close-range clear option for squad clear and mission pressure.

Signature

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

When to Pick

• You want a Shotgun that fits a shotgun / close-range clear play pattern.
• Your loadout needs what Arca Plasmor 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.

• Normal Attack

  Radiation 600

  Projectile · Crit 22% / 1.6× · Status 28% · Fire Rate 1.1 · Projectile 60 · Falloff 10–20m (−67%)

• Normal Attack (Projectile): Radiation 600.0.

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.

• Primary 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 0.95.

  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 Hell

  Multishot

  Core multishot for pellet weapons.

• Critical Deceleration

  Crit Chance

  Common crit-chance option on shotguns.

• Primed Ravage / Ravage

  Crit Damage

  Crit damage for pellet crit builds.

• Galvanized Savvy

  Status Damage

  Status-scaling damage on kill stacks.

• Point Blank / Primed Point Blank

  Base Damage

  Shotgun damage foundation.

• Elemental dual-stats

  Elemental

  Viral/Heat or Radiation lines for Steel Path.

• Chilling Reload / Ammo Mutation

  QoL

  Keeps magazines flowing on heavy pellet guns.

• Blaze / Toxic Barrage

  Hybrid

  Faction/elemental hybrids when they fit the build.

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.