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Borderlands 4 Guide

All Takedown at Hadron Abyss Items Mechanics, Licenses & Best Rolls

Late Game
Mechanics
Weapons
Ordnance
Shields
Legendary Loot
Class Mods
Repkits
Updated on Jul 15, 2026
Jul 15, 2026

Overview

The Borderlands 4 Takedown at Hadron Abyss features all-new Legendaries for players to find, including weapons, ordnance, a shield, a repkit and class mods for every Vault Hunter. Alongside this, there's also a new Pearlescent weapon!

In this guide, I'll be breaking down the effects, acquirable licenses and the best rolls for each of these new items!

Many thanks to...

Girthquake, Grace, Iserrot, JoeForLong, Lango, Sinfector, wrw713, Nepta, Steveo, Mattmab, Jack and Leo for their contributions to the Gearology guides.

Weapons

Fishward Jakobs Assault Rifle

Fishward

Like shooting fish from a barrel.

Fish Fry - On Kill, increase Damage Dealt of the next Mag by +20% for a Maximum of 5 stacks.

Mechanics

Rolls

  • Kinetic only.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Platinum Chest (Hadron Abyss Takedown)

Hyperion (Gun Shield)

Hyperion (Accuracy Grip)

Tediore (Throw on Reload)

  • Includes Tediore reload variants

COV (Unlimited Mag)

Ripper (Charge Mag)

Atlas (Dart Underbarrel)

Atlas (Grenade Underbarrel)

COV

COV + Atlas

Ripper

Ripper + Atlas

Ishmael Order Sniper Rifle

Ishmael

From hell's heart.

Harpoon - Bleeds the target over 5s.

Mechanics

  • Harpoon-style projectile that on moment of impact creates a DOT. This DOT ticks for 15 + 1 times.
    • On final tick, the projectile explodes for an additional time. The final explosion damage is not considered status effect.

Bleed Tick Base Formula is Card / 15.

  • The Bleed is considered Gun Damage, Status Effect Damage and Skill Damage.
    • Also benefits from Amp and Enhancement Gun Damage
  • Not affected by Status Duration.
  • 20 is the maximum stacks of Bleed.
  • Untested if the pool is shared with Vex/C4SH bleeds.

Rolls

  • Kinetic only.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Child of Terramorphous

  • Can also be a chest reward

Tediore (Throw on Reload)

  • Includes Tediore reload variants

COV (Unlimited Mag)

Ripper (Charge Mag)

Hyperion (Accuracy Grip)

COV

Ripper

Marshall's Claw Maliwan Sniper Rifle

Marshall's Claw

Men, you have done your full duty.

Commandeer - Fires 3 pellets per shot in 5-round bursts.

Mechanics

Rolls

  • Elemental only.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Crackclaw

  • Can also be a chest reward

Hyperion (Gun Shield)

Hyperion (Accuracy Grip)

Jakobs (Ricochet Accessory)

Tediore (Throw on Reload)

  • Includes Tediore reload variants

Torgue (Impact Mag)

Torgue (Sticky Mag)

COV (Unlimited Mag)

Ripper (Charge Mag)

Atlas (Dart Underbarrel)

Atlas (Grenade Underbarrel)

Daedalus (Underbarrel/Multi-Loader)

  • Jakobs
  • Jakobs + Torgue Impact
  • Jakobs + COV
  • Jakobs + Ripper
  • Jakobs + Daedalus Mode
  • Torgue Impact
  • Torgue Impact + Daedalus Mode
  • COV
  • COV + Daedalus Mode
  • COV + Atlas
  • Ripper
  • Ripper + Daedalus Mode
  • Ripper + Atlas

Sharkbait Tediore Shotgun

Sharkbait

Now, look fellas, let's be reasonable.

Chum the Water - Every bullet that hits enemies applies 1 stack of Chum. At 20 stacks of Chum, the enemy explodes.

Mechanics

  • Chum the Water's Explosion is considered Gun Damage.
    • Stacks don't have a timer.
    • Guns with legs can trigger the effect.
    • Gun source Bonus Elements do not contribute to building up the effect.
    • Double hits through Tier 3 High Caliber + Splash do not cause any extra buildup of Chum the Water.
    • Reload Impact explosions count as 5 shots towards Chum The Water.

Rolls

  • Can be Kinetic.
  • Can be Elemental.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Child of Terramorphous

  • Can also be a chest reward

Tediore Reload Variants

Hyperion (Gun Shield)

Hyperion (Accuracy Grip)

Jakobs (Ricochet Accessory)

Torgue (Impact Mag)

Torgue (Sticky Mag)

COV (Unlimited Mag)

Ripper (Charge Mag)

Atlas (Dart Underbarrel)

Atlas (Grenade Underbarrel)

Daedalus (Underbarrel/Multi-Loader)

Maliwan (Element Switch Underbarrel)

  • Jakobs
  • Jakobs + Torgue Impact
  • Jakobs + COV
  • Jakobs + Ripper
  • Torgue Impact
  • Torgue Impact + Daedalus
  • Ripper
  • Ripper + Atlas
  • Ripper + Daedalus Mode

Shoals Jakobs Pistol

Shoals

The real voyage of discovery consists not in seeking new landscapes but in having new eyes.

Habitual - Ricochets deal Splash Damage

Mechanics

Rolls

  • Kinetic only.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Child of Terramorphous

  • Can also be a chest reward

Hyperion (Gun Shield)

Hyperion (Accuracy Grip)

Tediore (Throw on Reload)

  • Includes Tediore reload variants

Torgue (Impact Mag)

Torgue (Sticky Mag)

COV (Unlimited Mag)

Ripper (Charge Mag)

Atlas (Dart Underbarrel)

Atlas (Grenade Underbarrel)

Daedalus (Underbarrel/Multi-Loader)

  • Torgue Impact
  • Torgue Impact + COV
  • Torgue Impact + Daedalus Mode
  • Ripper
  • Ripper + Atlas
  • Ripper + Daedalus Mode

Swan Song Daedalus Shotgun

Swan Song

I'm a simple man.

Cannonball - Underbarrel burst fires explosive Cannonballs. On Kill, gain additional Underbarrel Ammo up to a Maximum of 4 bonus Ammo.

Mechanics

  • Cannonball impact deals 2.5x Card Damage.
  • Cannonball explosion deals 5x Card Damage.
  • Stacks don't have a timer.
  • Skill Tree Mag Size increases don't seem to work on the underbarrel.

Rolls

  • Can be Kinetic.
  • Can be Elemental.

Note: COV gun rolls have specific useful synergies on certain characters' builds, namely C4SH and Rafa.

Drop Source

Available Licenses & Parts

Best Rolls

Tidebreaker

  • Can also be a chest reward

Hyperion (Gun Shield)

Hyperion (Accuracy Grip)

Jakobs (Ricochet Accessory)

Tediore (Throw on Reload)

  • Includes Tediore reload variants

Torgue (Impact Mag)

Torgue (Sticky Mag)

COV (Unlimited Mag)

Ripper (Charge Mag)

  • Jakobs
  • Jakobs + Torgue Impact
  • Jakobs + COV
  • Jakobs + Ripper
  • Torgue Impact
  • COV
  • Ripper

Class Mods

Damned Amon Class Mod

Damned

Rupture of Spatial Temporal Warp!

Special Effect - Activating an Action Skill or Forgeskill causes Amon's Gun Shots to have a 10% chance to cause a Pyre, dealing Incendiary Melee Forgeskill Damage based on 100% of the Damage Dealt for 10 seconds. Effect can only occur once a second.

Mechanics

"Based on 100% of Damage Dealt for 10 seconds" refers to the impact of the gun being the base damage for the Forgeskill Damage instance.

Formula:

Impact

x

[ 1+ ((1+ASD)x(1+DD)) + ((1+Melee)x(1+Runner)) + Skill + Elemental + All + Debuff + {1 + Honed Mind + (2 x Skill Crit)} ]

Rolls

Drop Source

Available Skills

Best Rolls

Chest Reward (Hadron Abyss Takedown)

Tritanium Knuckles

Fists of Stone

Executioner

Destruction Engine

Roll A

  • +5 Executioner
  • +2 Fists of Stone

Trainer C4SH Class Mod

Trainer

Truly skilled trainers should try to win with all their favorites.

Special Effect - C4SH gains up to +40% increased Gun Damage per Bone Totem. The less health each Bone Totem has, the greater the Gun Damage.

Mechanics

  • The 'Gun Damage' is actually Amp.
    • The Amp seems to scale as mentioned, being up to 40% per totem at their minimum health.
    • Once a totem dies, you still get a few moments of the effect being maxed.
  • While the Gun Damage is active, any shots are turned into Skill Damage.
  • Tediore Reloads do not benefit from the Amp or Skill Damage conversion.

Rolls

Drop Source

Available Skills

Best Rolls

Chest Reward (Hadron Abyss Takedown)

Dealer's Bluff

Charm Bracelet

The Wilds

Restless Remains

Roll A

  • +5 The Wilds
  • +2 Dealer's Bluff

Chirurgeon Harlowe Class Mod

Chirurgeon

A quiet mind cureth all.

Special Effect - Whenever Harlowe puts an enemy in Stasis or she deals damage to an immune enemy with Stasis, she deals +80% increased Damage and has +100% Status Effect Chance against that enemy while it is Entangled. If that enemy is immune to Stasis, double these bonuses.

Mechanics

Rolls

Drop Source

Available Skills

Best Rolls

Chest Reward (Hadron Abyss Takedown)

Heat Sink

Triple Point

Accretion

Core Sample

Roll A

+5 Heat Sink

+1 Triple Point

+1 Core Sample

Power-Puncher Rafa Class Mod

Power Puncher

Things have changed.

Special Effect - While Rafa has a grenade equipped, his melee attacks have a 25% chance to spawn a Fire Fissure that deals Ordnance Melee Damage equal to Rafa's Grenade Damage.

Mechanics

  • Base Damage is the Card Damage of your equipped Grenade.
  • Fissure is a singular instance of damage that benefits from Ordnance, Melee, and Skill Damage.
  • Short internal cooldown, around 4 seconds.
  • Can proc Groundbreaker
  • 25% chance to proc on Arc-Knives swing or specific melee animations in which Rafa backhand swings his Arc-Knife blade.
    • Does not work with: Slams, melee animation while Peacebreakers are active, any bladed weapon
    • Can proc even on missed melee/Arc-Knives swings

Rolls

Drop Source

Available Skills

Best Rolls

Chest Reward (Hadron Abyss Takedown)

El Paraguas

Collaborate Ignition

Sinergia

El Diablito

Roll A

  • +4 Collaborate Ignition
  • +3 Sinergia

Roll B

  • +3 Collaborate Ignition
  • +3 Sinergia
  • +1 El Diablito

Living Weapon Vex Class Mod

Living Weapon

It's a peculiarity of mine.

Special Effect - When Vex deals Action Skill Damage she has a 2% chance to trigger Kill Skills. This effect can only occur every 5 seconds.

Mechanics

To deal with the pain after reading the Special Effect, ask Gearbox to remove the cooldown.

Rolls

Drop Source

Available Skills

Best Rolls

Chest Reward (Hadron Abyss Takedown)

Grave Fiends

Grave Power

A Deeper Grave

Mourning

Roll A

  • +3 Grave Power
  • +4 Mourning

Roll B

  • +2 Grave Power
  • +5 Mourning

Roll B

  • +3 Grave Power
  • +4 Grave Fiends

Ordnance

Ordinance Tediore Grenade

Ordinance

No harm ever came from reading a book.

Ord 25-2 - Throws a book that releases damaging pages

Mechanics

Rolls

  • Can be Kinetic
  • Can be Elemental

Drop Source

Best Rolls

Platinum Chest (Hadron Abyss Takedown)

Preference of Augment combination

Draupner Ripper Heavy Ordnance

Draupner

Warning from the Red Morning.

Return Wave - Pierces and ricochets back to the player upon hitting surfaces

Mechanics

  • Returning projectiles get 25% card penalty
  • Since the charge effect resets per shot, 3/3 Active Fire is always active while you keep shooting.

Rolls

  • Can be Kinetic
  • Can be Elemental

Drop Source

Best Rolls

Platinum Chest (Hadron Abyss Takedown)

Highest Card Damage

Shield

Little Sister Tediore Shield

Little Sister

Unzip him, Mister B!

Sister - On Segment break, spawn a Kill Drone that fires alongside the Vault Hunter, mimicing their Gun's Element and deals 25% of the Gun's Damage

Mechanics

The Kill Drones will fire whenever the Vault Hunter causes a Gun Damage Instance. Many effects in the game are considered that, some examples being:

Drones are a sort of 'Instance Rider' based on 25% of Damage Dealt, and can double dip some Soup sources.

Drone's base element will be based on the main element of the Vault Hunter's gunshot.

  • The Drone Damage Formula is as follows:

Drone Count

x

Damage Dealt

x

0.25

x

Soup

  • Soup does not include Gun Damage.
    • Includes Splash, All Damage, Elemental Damage and Crit Damage.
  • Damage Dealt includes Flat Amp.
    • From Gloam Till Glow still needs proper checking.
  • Gun Source Bonus Elements do not apply to drones.
    • Global Bonus Elements like Hot Hand and The Wilds apply. Nothing Beats Lead also works since it only requires an elemental base.
  • Drone Damage doesn't feed Groundbreaker.
  • Drone duration needs confirming.
  • Too many Drones at once can cause game lag/hang-ups.

The Boxer Jabbing Augment can allow manual triggers of Kill Drones by using melee damage/attacks.

  • Haruspex, Wretched Shadows, Mantra and Slippy are some examples that work.
  • Trouble and Reaper melee attacks don't work.

Rolls

Drop Source

Best Rolls

Gilgathresh

  • Can also be a chest reward
  • Boxer Jabbing + Positive Reinforcement Enouraging
  • Boxer Jabbing + Armor Segment Segmented

Preference/Build-based

Repkits

Vitae Jakobs Repkit

Vitae

Bring it in for the real thing!

Lifeblood - Heals for an amount on Critical Damage Dealt

Mechanics

Rolls

Drop Source

Best Rolls

Platinum Chest (Hadron Abyss Takedown)

Preference/Build-based

Firmware

Bruiser Firmware

Bruiser

Effects

Tier 1

Tier 2

Tier 3

Damage Taken reduced by 10%

Lifesteal increased by +3%

Killing an enemy grants +10% Damage Dealt for 30.0 seconds. Multiple stacks can overlap. Max 5 stacks.

Mechanics

The Damage Dealt boost is On Hit Damage (Soup).

Comments

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