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Killing Floor 3 (KF3)

IR-50 Brimstone Build and Mods

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★ Disclaimer: Our guides were written before the Rearmament update, so some information may be outdated. We appreciate your support!
★ News: Crossplay | Game Pass | Roadmap
★ Best Settings | Teams | Weapons
┗ Best Bonus Abilities | XP Farm | Difficulty

IR-50 Brimstone is a SMG in Killing Floor 3 (KF3). See the best build loadout, mods, and best classes for IR-50 Brimstone here!

List of Contents

IR-50 Brimstone Build Loadout

Best Mods For IR-50 Brimstone

Ammunition White Phosphorous Flares
Barrel Magnesium Accelerator
Underbarrel Laser Sight
Sight Reflex Sight
Magazine Drum Mag
Internal Fast Action Receiver

Best Ammo and Weapon Mods

All Compatible Mods For IR-50 Brimstone

Mod Slot Effect
CompensatorCompensator Barrel Stats:
-8% Recoil
Muzzle BrakeMuzzle Brake Barrel Stats:
+5% Accuracy
Laser SightLaser Sight Underbarrel Stats:
+4% Accuracy
Red Dot SightRed Dot Sight Sight Stats:
+3% Accuracy
-2% Recoil
+4% Zoom Critical Damage
Reflex SightReflex Sight Sight Stats:
+2% Accuracy
+35% Handling
-4% Recoil
+1% Zoom Critical Damage
Drum MagDrum Mag Magazine Stats:
+20 Mag Size
-25% Handling
-4% Recoil
-12% Reload Speed
Extended MagExtended Mag Magazine Stats:
+10 Mag Size
-6% Reload Speed
Fast Action ReceiverFast Action Receiver Internal Stats:
+15% Fire Rate
Heavy Frame ReceiverHeavy Frame Receiver Internal Stats:
+20% Damage
-20% Fire Rate
+18% Recoil
White Phosphorous FlaresWhite Phosphorous Flares Ammunition Stats:
-15% Accuracy
+20 Burn Affliction
+5% Damage
+8 Panic Affliction
Nano-Thermite RoundsNano-Thermite Rounds Ammunition Stats:
+3% Accuracy
+20 Burn Affliction
-20% Damage
+20% Damage-Over-Time
4 Seconds - Damage-Over-Time Duration
Primary Fire Mode:
Heat Heat
Magnesium AcceleratorMagnesium Accelerator Barrel Stats:
+5% Accuracy
+10 Burn Affliction
+25% Projectile Speed

IR-50 Brimstone Best Classes

IR-50 Brimstone Recommended Perks

Specialists For IR-50 Brimstone

Best Weapons for Each Class

IR-50 Brimstone Overview

IR-50 Brimstone Stats

IR-50 Brimstone
Primary Damage
100
Heat Heat
Stats
Accuracy
50
Fire Rate
90
Handling
60
Penetration Power
5
Recoil
30
Reload Speed
50

The stats represented by bar graphs are estimates as they do not have a numerical value in-game.

Flaregun that shoots limited-range magnesium-thermite flares that ignite fires upon impact.

IR-50 Brimstone Information

Misc. Info
Type SMG
Primary Ammo (Base) Magazine: 20
Capacity: 375
Shop Cost (Base) 1,400 DOSH

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List of All Weapons and Guns

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All Primary Weapons

List of Primary Weapons
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