UMP-45 | Mudder

All finishesInspect

UMP-45 | Mudder
Wear range
0.06–0.80
Released
2018-09-01
Paint kit
90
Finish style
Hydrographic
Sources
London 2018 Inferno Souvenir Package、Katowice 2019 Inferno Souvenir Package、Berlin 2019 Inferno Souvenir Package、Stockholm 2021 Inferno Souvenir Package、Antwerp 2022 Inferno Souvenir Package、Rio 2022 Inferno Souvenir Package、Paris 2023 Inferno Souvenir Package、Copenhagen 2024 Inferno Souvenir Package、Shanghai 2024 Inferno Souvenir Package、Austin 2025 Inferno Souvenir Package、Budapest 2025 Inferno Souvenir Package、The 2018 Inferno Collection
Drop chance (estimate)
London 2018 Inferno Souvenir Package：0.075%；Katowice 2019 Inferno Souvenir Package：0.075%；Berlin 2019 Inferno Souvenir Package：0.075%；Stockholm 2021 Inferno Souvenir Package：0.075%；Antwerp 2022 Inferno Souvenir Package：0.075%；Rio 2022 Inferno Souvenir Package：0.075%；Paris 2023 Inferno Souvenir Package：0.075%；Copenhagen 2024 Inferno Souvenir Package：0.075%；Shanghai 2024 Inferno Souvenir Package：0.0375%；Austin 2025 Inferno Souvenir Package：0.075%；Budapest 2025 Inferno Souvenir Package：0.075%；The 2018 Inferno Collection：0.075%

Steam market price

CNY

Souvenir

Introduction

UMP-45 | Mud Killer – The Marble Monster You Can Actually Afford

Looking for a budget SMG that doesn't look like a default? The UMP-45 | Mud Killer might just be your next pickup. It's a common skin from the 2018 Inferno Collection, but don't let the 'common' tag fool you – this thing has a cult following.

What's the deal with this skin?

  • Weapon: UMP-45
  • Finish: Mud Killer
  • Rarity: Common (white)
  • Collection: The 2018 Inferno Collection
  • Technique: Water Transfer
  • Wear Range: 0.06 – 0.8 (Factory New to Battle-Scarred)

It's got a marble pattern slapped on, giving it a grungy, organic look. Think of it as camouflage for maps like Inferno or Overpass – it blends right in.

Where does it come from?

This skin drops from Inferno Souvenir Packages from basically every major since 2018 London. That means you can find it in:

  • 2018 London
  • 2019 Katowice
  • 2019 Berlin
  • 2021 Stockholm
  • 2022 Antwerp
  • 2022 Rio
  • 2023 Paris
  • 2024 Copenhagen
  • 2024 Shanghai
  • 2025 Austin
  • 2025 Budapest

Plus, it's also part of the 2018 Inferno Collection, so you can get it from opening that collection too.

Wear and Tear

With a float range of 0.06 to 0.8, you can find this skin in almost any condition. Factory New versions are relatively rare, but even a Minimal Wear or Field-Tested copy looks decent. The marble pattern doesn't chip away too badly, but higher floats will show more scratches and fading.

Is it worth buying?

Absolutely, if you're on a tight budget. This skin costs pennies, even in Factory New. It's a great way to give your UMP a bit of personality without breaking the bank. Plus, souvenir versions with team stickers can be a nice collector's item.

But if you're looking for a flashy, high-tier skin, this ain't it. It's subtle, a bit dirty, and that's the charm.

Expert's Corner

"The Mud Killer is one of those skins that flies under the radar. It's not going to win any beauty contests, but it's a solid choice for a cheap loadout. I've seen people pair it with other Inferno-themed skins for a full 'map camo' set. And hey, if you get a souvenir with a nice sticker placement, it's a nice little bonus."

Verdict: A no-brainer for budget players. Grab a cheap one, enjoy the marble, and move on.

Remember: always inspect in-game before buying. Pattern placement can vary, and you might find a unique marble swirl you like.