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Borderlands 4 Guide

How to Unlock the Legendary Plasma Coil SMG

Weapons
Legendary Loot
Updated on Oct 31, 2025
Oct 31, 2025

Overview

Plasma Coil returns from Borderlands 3 as a Legendary SMG that fires high (elemental) damage, slow moving, orb-like projectiles.

While its slow projectiles can be an issue, this is easily overcome by simply moving into close range and fighting enemies head-on. While nothing flashy, it's definitely a solid option overall.

borderlands 4 plasma coil smg

How to Unlock

Unlock Location:

  • Progress through the story until reaching "The Timekeeper's Order" a Main Quest in Dominion area.
  • You will encounter The Primordial Guardian Timekeeper, the last major campaign boss.

Farm Method:

  • Defeat The Primordial Guardian Timekeeper and finish the main story mission.
  • After completing the story mission, return to his arena.
  • Use the Encore Machine nearby to reset the fight.
  • Repeatedly defeat The Primordial Guardian Timekeeper until Plasma Coil drops.

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