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Borderlands 4 Build

True UVH6 Viable - Heavy Ordnance Amon Build - HORBA

Amon

Scourge

End Game

Verified

Trending

By AncientRune

Updated on Jan 12, 2026

Jan 12, 2026

Build Overview

Heavy Ordnance Ricochet Banaza Amon

Also known as HORBA! This a TRUE UVH6 Amon build that has been updated ever since pre launch adjusting for updates. This used to be debatably the strongest Amon build and while it is still insanely strong, it has lost some power because of Time to Kill being longer now. Keep in mind that True mode is purely optional so you can just run UVH6 and do fine.

Focuses on Heavy Weapon Ordnance dealing high base damage combined with Tail of the Comet for high single target and using certain weapons for amazing mobbing.

Heavy Weapon Ordnance benefits from both Ordnance and Gun damage as well as benefits from ammo regen and which allows up to keep up our ordnance infinitely. This means we don't have to go about worrying about Ordnance cooldown.

Strengths And Weaknesses

Bossing
Mobbing
Survivability

Somewhat Gear Specific
No longer 1 Shots but still melts
FFYL relies on meta guns

Skill Tree

Points Spent 0 / 49

LMB Allocate

RMB Unallocate

5/5

3/5

2/5

5/5

4/5

5/5

ACTION SKILL

Main/Bossing:

Scourge - used for the survivability. The less often our shield is being touched the better as our Shields need to be full

Cryonic Thrum - our preferred augment for the cryo bonus element for extra damage. As well as a little bit of healing.

We keep Firewall as our augment as it helps boost our Heavy Ordnance damage. This is a PURE MULT. Firewall is the main reason for using Scourge for bossing.

Aggressive Playstyle/Mobbing:

Onslaughter - bonus element applies to Heavy Ordnance, Shield Regen for Shields, and movement speed for mobbing to get from enemy to enemy faster.

Pyroclast - used for the fully restore shield and health on activation for better survivability. You will almost never have enemies inside the forgestorm as you will down yourself from your ordnance's splash.

Forgeskill is not used at all with this action skill as it's just not helpful.

Easy Ordnance Cooldown:

Crucible - pair this with Tripwire for easy ordnance cooldown if you end up using all your ammo.

We do not reach an augment nor does our Forgeskill do anything for us so you can just ignore that.

SKILL TREE

BLUE TREE:

Wrath of Nature - Increased status effect chance for Tail of the Comet and Primal Surge

Scorched Kairos - used to get 7 mag on Honey Bunches. Only 3/5 is the lowest needed without other mag size boosts. This allows you to do it full charge without using all Heavy Ammo before Primal Surge can proc. This is a key skill

Tail of the Comet - Double dipping Status Effect based on Ordnance damage impact. Used for single target and the big damage dealer. This is a key skill

Battleborn - a little extra damage and to get down the skill tree.

Icy Rage - increase gun damage on cryo gun and status effect kills.

Primal Surge - keep up Heavy Ordnance Ammo and Shields. This is a key skill

Blackout - Double dipping Status Effect based on Ordnance damage impact. This is a key skill

RED TREE:

Impetus - Nice movement speed for getting around since Heavy Ordnance lowers movement speed

What Burns Within - boosts Onslaughter bonus element and any ordnance that is fire element

Gut Punch - damage boost that double dips into Tail of the Comet & Blackout

Wield the Storm - status damage applies but the duration doesn't (for TOTC and Blackout specifically)

Bullet Storm - gun damage for Heavy Ordnance

Catastrophe - mainly for the crit chance since it's easy to keep up. Blackout will give those stacks.

SKILL TREE FLEXIBILITY:

Primal Surge into Crackling Aegis - only need at least 1 point into Primal Surge for ammo up but more points is good for consistency. Crackling Aegis is just a really good damage boost even if not at full shield. Get both bonuses

Wrath of Nature & Battleborn into The Thrill or Machinist - they are just different utility and QoL for the build. Battleborn is more damage because of Full Spectrum Arsenal while Wrath of Nature is consistency because of Tail of the Comet. The Thrill for survivability. Machinist for helping keep up cooldown if you run out of ammo or if not going Crucible

Equipment

Weapons

Repkit & Ordnance

Utilities

Ordnance:

Maliwan Heavy Weapon - MIRV and Two Shot parts for Hailspike. Insanely good for mobbing and bossing

Bottled Lightning - 3 mag for optimal mobbing.

Torgue Heavy Weapon - Triple Barrel and Shrapnel Rockets parts for Honey Bunches for optimal bossing

Disc Jockey - go to for mobbing as well

Sprezzatura - used specifically for Bloomreaper Crystals which is explained in Gameplay

Jetsetter - really good for bossing

Atling Gun

Vladof Heavy Weapon - Explosive Rounds and Two Shot parts for Ootka

Torgue Heavy Weapon - Two Shot and Fire Rate parts for Rocket Socket

Guns:

Jakobs Pistol - currently my stat stick for the Vial Launcher underbarrel which boosts our damage by 30% which double dips. Only for bossing. Usually not good if using Honey Bunches because of the time it takes to charge

Use any good gun for Fight For Your Life

Inscriber - w/ Banger enhancement is solid damage

Maliwan Shotgun Stellium - w/ Primed Potency enhancement and Energy Disc underbarrel

Class Mod:

Ideal passives to look out for: Ordnance Crit Chance, Gun Crit Chance, Status Effect Chance, Damage Dealt, Elemental Damage, Cryo Damage, Shock Damage, Status Damage, Gun Damage, Ordnance Damage

Amon Class Mod Grenadier - gives points into Blackout for even stronger dot against shielded enemies and crit chance just means even more Blackout so it's just stronger and more often

Amon Class Mod Icebringer - gives points into Tail of the Comet for an even stronger DoT. 10/5 is insane.

Amon Class Mod Cyborg - Gives points in Endless Bombardment and Primal Surge for better ammo uptime.

Shield:

Watts 4 Dinner - rolls with 150% amp roll for maximum damage. can also roll Siphon w/ 100% amp. Also gives shock bonus element

Guardian Angel - rolls w/ 150% amp but w/ A LOT faster recharge

Protean Cell - the bonus element applies to our status effects which is not normal for bonus elements. This makes it INSANELY STRONG for bossing. But this makes you VERY FRAGILE so for bosses that hit you a lot this is not ideal. Can also be used in mobbing because of Primal Surge.

Super Soldier no longer works w/ Heavy Ordnance :(

Repkit:

Ideal Rolls: Get the roll with Action Skill Cooldown Rate for better Action Skill cycling. Or Amp for more damage. Can also go elemental or damage dealt

Kill Spring - go to for mobbing. The healing means you don't have to interrupt your Heavy Ordnance for using Repkit. This also gives Overshield which makes it even better

Triple Bypass - the 3 charges and regain are perfect for Now With Caffeine.

Enhancement:

Any enhancement works. Something that helps the guns you use is good. But mainly just go for good passives. Gun damage is a MULT (only additive with High Caliber gun damage in this build). Other damage bonuses are Gun splash damage, Gun splash radius, Gun equip speed.

Firmware

Repkit & Ordnance

Repkit FirmwareHigh Caliber

Ordnance FirmwareHigh Caliber

Utilities

Class Mod FirmwareGod Killer

Shield FirmwareGadget Ahoy

Enhancement FirmwareGadget Ahoy

2/3 or 3/3 High Caliber - Gun damage is a MULT (additive with enhancement gun damage). This makes this firmware a MUST HAVE Only go 3/3 if using Hailspike as it causes additional projectiles and MIRVs. Would recommend having your 3/3 on your Ordnance.

The rest of these choices are just in place of whats open after equipping High Caliber

1/3 God Killer - applies to bosses which double dips

2/3 Gadget Ahoy - Increased ordnance damage and some cooldown (just in case)

1/3 or 2/3 Airstrike - Splash radius is nice for hitting more enemies and splash damage applies to impact of Heavy Ordnance. Only 10% damage

3/3 Skillcraft - gives skill damage and skill crit chance. Applies to Tail of the Comet but not Blackout because of bugs

Get Throwin damage doesn't apply to Heavy Ordnance. Only Tediore Chucks and Grenades

Specialization

Specialization 1The Best Defense

Specialization 2Riddle You This

Specialization 3Fragmentation Payload

Specialization 4Full Spectrum Arsenal

Now With Caffeine - must have for cycling Scourge and Onslaughter (w/ Triple Bypass)

Tripwire - used with Crucible for easy cooldown. Can replace with Now With Caffeine

The Best Defense - the damage boost will double dip Tail of the Comet

Fragmentation Payload - Addition 5% additional crit chance along with our Blackout skill as well as crit damage

Riddle You This - easy gun damage to keep up

Full Spectrum Arsenal - replace w/ Now With Caffeine or Tripwire for bossing

Gameplay

Mobbing:

Pretty simple. Activate Onslaughter (if applicable) for movement speed and bonus element.

Get shooting with your Heavy Ordnance

Pay attention to your ammo

Use your Repkit to get back your Action Skill if using Now With Caffeine and Triple Bypass

If you run out of ammo and are using Crucible w/ Tripwire then spam that

Bossing:

Activate Repkit for Amp

Make sure your Amp shield is full

If using the Protean Cell shield then make sure to slam

Activate Scourge and Firewall

Shoot your Vial Launcher for debuff

Equip your Heavy Ordnance and start shooting. Pay attention to your ammo so you don't run out. Make sure you are keeping your shield action.

Bloomreaper:

Shoutout to Lorandb from the Soup Kitchen Discord who came up with this strategy

While this build is True UVH6 viable for Bloomreaper it is a lot easier to just go basic UVH6 for platinums.

Gear Used: Sprezzatura, Fire Honey Bunches, Cyborg w/ Endless Bombardment, Grenadier w/ Blackout or Icebringer w/ Tail of the Comet, Triple Amp Watts 4 Dinner or Guardian Angel, Normal Firmware (Airstrike recommended but Gadget Ahoy is still fine), Normal Specialization, Any enhancement w/ Gun Damage and other beneficial passives

Equip Onslaughter or Crucible

Equip Sprezzatura and Cyborg first.

Use Amp on Repkit

When the crystals spawn shoot the Sprezzatura at a distance so it doesn't down you, Shoot until all the crystals and orbs are gone and it's going into the next phase. If you find yourself running out of ammo then use Crucible + Tripwire strat.

When crystals are gone swap to Honey Bunches and Grenadier. Use Amp on Repkit again.

Once Bloomreaper is able to be damaged then charge up your Honey Bunches and keep going until the next phase comes. You may only need 1 full charge and then some partial charges. Also if you are using Onslaughter then activate that beforehand

When you get to the final phase do the same thing w/ Honey Bunches

Notes

When you do any action - grapple, activate action skill, activate forge skill, mantle - will put away your Heavy Ordnance away and put it on cooldown UNLESS you are at maximum ammo. So make sure your ammo is at max before doing anything.