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Borderlands 4 Build

Gunslinger C4SH - Cross Fire based C4SH build

presentationC4SH
End Game
Verified
Trending
Updated on Jun 17, 2026
Jun 17, 2026

Build Overview

A C4sh build focused primarily around upkeep of the Cross Fire action skill

Strengths And Weaknesses

  • Stylish
  • High Damage
  • Auto Aim
  • Tanky
  • Auto Targetting can be very frustrating at times

Skill Tree

Points Spent 0 / 59
LMB Allocate
RMB Unallocate
Cross-Fire
5/5
5/5
4/5
1/1
1/1
3/5
5/5

If not going Hot Hand for better Cross-Fire ricochets, then max out A Blur of Fingers and Brass and spend your remaining points where you want.

Equipment

Weapons
Repkit & Ordnance
Utilities

GUNS:

Hot Slugger - Fastest reload for Windfall fishing. Best in slot for Ante Up.

Darkbeast - Good backup gun. Great for Crystal enemies.

Jakobs Shotgun - Spread Launcher. Crystal enemies or 2nd Winds

Inscriber - Chuck weapon for second winds

CLASS MOD:

PURPLE Pistoleer Class mod with as many points into Brimstone as you can. Secondary skill: A Blur of Fingers and Brass.

Passives: Gun Damage / Action Skill Damage / Skill Crit Chance / Skill Damage / Movement Speed / Gun Crit chance.

Ludopath with Ante Up points works as a back-up if you have one laying around from other builds.

REPKIT:

Kill Spring for passive healing

AF1000 for healing during Action skill + secondary bonus. Elemental Affinity, Movement speed...

Triple Bypass - Accelerator or any passive for Now With Caffeine spam. Purple Repkit with Accelerator + player's choice as the budget choice.

ORDNANCE:

Lingering + Hazardous +/ Alchemical grenade for DoT Spam. Good on a Waterfall.

SHIELD:

Hopscotch - Turtle Parts. Very high survivability, my favourite to use.

Collector - Turtle Parts. Biggest shield in the game.

Watts 4 Dinner - Siphon Parts. Bonus element for Action skill damage. HURTS RICOCHET DAMAGE

Firewerks - Bonus Add clear

ENHANCEMENT:

Player's choice. Doesn't matter much

Firmware

Repkit & Ordnance
Repkit FirmwareBaker
Ordnance FirmwareBaker
Utilities
Class Mod FirmwareSkillcraft
Shield FirmwareSkillcraft
Enhancement FirmwareSkillcraft

Cross-Fire hits enough that 3rd tier Skillcraft will be worth grabbing.

Final 2 points are player's Choice.

Baker for big shield stuff.

Rubberband man If you don't have a huge shield and/or you want some lifesteal too.

You can drop Skillcraft if you want both.

Specialization

Specialization 1Full Spectrum Arsenal
Specialization 2I Am A Gun
Specialization 3Now With Caffeine
Specialization 4Groundbreaker

Maximum damage for Cross-Fire. Full Spectrum Arsenal also increasing existing crit damage bonuses from your Skill tree and Killer tree.

I Am A Gun + Full Spectrum Arsenal creates a scenario where Gun Damage increases are at 2x efficiency. As Cross-Fire gets Gun damage, Ordnance Damage with Desperado and Skill / Action skill damage.

Fragmentation Payload is best for damage if not playing around Groundbreaker.

Gameplay

Get Fortune stacks by tossing an elemental Grenade and spamming Reload until Windfall triggers.

Throw Wretched Shadows if using Groundbreaker.

Activate Cross-Fire.

Immediately activate Desperado.

Wait until you reach 20 Fortune Stacks.

Hold your shoot button for And Hell Followed With Him to gain massive Fire damage and Burst fire Mode.

Re-trigger Desperado when required, and wait for Burst-Fire's cooldown to end before attempting to re-trigger. IMPORTANT

Between boss phases force end Cross-Fire and use a repkit for cooldown. This allows you to reset from step 1 to ensure all your bonuses overlap correctly. (Windfall, Desperado, Burst Fire).

Changelog

24/04/26 - Overhauls thanks to proper testing. The build is tested and Complete!

29/05/26 - Another overhaul due to changes to how some skills worked.

01/06/26 - Re-added Wretched Shadows for Groundbreaker abuse.

Video Guide

Table of Contents

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