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Borderlands 4 Build

Gun Study | LVL 60 All in 1 Gun Harlowe Build

presentationHarlowe
presentationFlux Generator
End Game
Creator
By LazyData
Updated on May 31, 2026
May 31, 2026

Build Overview

Generic Group Study build for endgame play

Strengths And Weaknesses

  • Versatile
  • Auto Crits
  • Infinite Ammo
  • Insane Mob Clear
  • Easy to Play
  • One Shots Bosses
  • Some of the Best mob clear possible
  • You have to play Harlowe

Skill Tree

Points Spent 0 / 59
LMB Allocate
RMB Unallocate
Flux Generator
5/5
3/5
5/5
3/3
2/3
5/5
5/5
1/1
5/5
5/5
5/5
5/5
5/5
1/5
4/5

Absolute Zero points are for use with the Generator class mod. For Phlebotomist users (or any other com) place these points elsewhere, like Mass Function, or Make Extraordinary.

Runaway Reaction is to entangle enemies if your skills are down as well as your cooldowns, basically pulls you out of the mud if you find yourself there.

Equipment

Weapons
Repkit & Ordnance
Utilities

Guns:

Stray Peak mobbing clear, esp with Jakob's Ricochet.

Darkbeast Vile enemy destructor

Convergence Good bossing damage and mobbing with Jakobs ricochet

T.K's Wave Torgue Impact mode for mobbing Destruction

Shalashaska. Torgue impact, Daedalus Shotgun. Enjoy Crime

Use with Torgue Airburst for more consistency.

Jakobs Shotgun SpreadLauncher for Boss 1 shots

Crow-Sourced One of the best guns in the game

Linebacker with High Cal 3 and Splash radius parts clears

Build is very versitile so just use your favourites.

Shield:

Highest AMP % you can find.

Watts 4 Dinner BiS

Class mod:

Phlebotomist with Sustained Reaction is great alround choice for both damage and uptime.

Bio-Robot Budget Phlebotomist for non DLC owners. Use for uptime, not damage.

Generator for max Damage.

Purple or Reactor with 5 points in Decoherence.

REPKIT

War Paint for Max DPS

Purple with AMP and ENRAGE for Boss 1 Shots.

Firmware

Repkit & Ordnance
Repkit FirmwareDeadeye
Ordnance FirmwareDeadeye
Utilities
Class Mod FirmwareHigh Caliber
Shield FirmwareHigh Caliber
Enhancement FirmwareDeadeye

High Caliber 3 for Spread Launcher 1 Shots


Specialization

Specialization 1I Am A Gun
Specialization 2Riddle You This
Specialization 3The Best Defense
Specialization 4In The Zone

Alternatives:

Groundbreaker

CQC - Use Slippy to proc

Notes

To more consistency trigger Group Study, throw it at your feet, then jump once.

Table of Contents

1. Build Overview2. Strengths And Weaknesses3. Skill Tree4. Equipment5. Firmware6. Specialization7. Notes

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