UMP-45 | Mudder (Factory New)

Skin overview

UMP-45 | Mudder is a Consumer Grade SMG finish with a marbleized hydrographic pattern in sandy tan and muddy brown. In Factory New the mottled blotches stay crisp and the earthy tones look even across the receiver and stock. This is the cleanest way to see the pattern as intended.

Item type: smg. Consumer Grade is the lowest tier of the rarity scale: the most common skins, most often used in trade-up contracts.

Hydrographic: the pattern is applied as a film over the metal; wear rubs it down to the base, starting with raised parts.

How the skin looks in Factory New

The receiver, handguard and the skeleton stock are covered in a hydrographic marble pattern of sandy tan with darker olive-brown blotches and lighter khaki spots. The stock frame carries a paler khaki tone of the same print. The magazine stays in plain grey metal, while the pistol grip, vertical foregrip, top rail and muzzle remain dark grey. On worn copies the paint goes first from the top edge of the receiver, the rail area, the front of the handguard, the charging handle and the edges of the stock, revealing grey metal underneath.

The marble print is complete on every painted part, from the handguard to the stock frame. Edges of the receiver and the charging handle show no exposed metal. In game the tan and brown tones look even and slightly saturated. The Factory New band for this skin is narrow, so copies differ very little from one another.

Factory New wear: float 0.06–0.07

The float of UMP-45 | Mudder ranges from 0.06 to 0.8; the Factory New quality covers 0.06–0.07 — 1% of this skin’s scale. Within the range, copies with a lower float look cleaner and are valued higher.

Where the skin comes from: collection and case

UMP-45 | Mudder belongs to The 2018 Inferno Collection, which holds 18 skins.

It drops from:

• Antwerp 2022 Inferno Souvenir Package
• Austin 2025 Inferno Souvenir Highlight Package
• Austin 2025 Inferno Souvenir Package
• Berlin 2019 Inferno Souvenir Package
• Budapest 2025 Inferno Souvenir Highlight Package
• Budapest 2025 Inferno Souvenir Package

And 7 more — souvenir packages and other sources.

Price by quality

Taking Factory New as the baseline:

• Minimal Wear — 17× cheaper
• Field-Tested — 17× cheaper
• Well-Worn — 17× cheaper
• Battle-Scarred — 17× cheaper

The comparison uses our cheapest listing of each quality; where there is none, the market reference.

By price this skin is 5th of 7 skins Consumer Grade UMP-45 in this quality (the first being the dearest).

Souvenir version

There is also a the Souvenir version with tournament stickers.

Which stickers suit it

Earthy and muted stickers in brown, olive, khaki or matte gold blend with the mud-marble finish. Placements on the receiver side panel read best, and a single dark or black sticker can add contrast without breaking the camouflage feel.

What to look at before you buy

• Check where the float sits within the grade, since a low float in Well-Worn or Battle-Scarred keeps noticeably more of the print.
• Look at the top edge of the receiver and the stock frame, where paint loss shows first.
• Pattern placement shifts the blotches slightly, but on this marble finish it does not change the look in a meaningful way.
• A Souvenir version exists, so confirm which version you are buying and whether applied stickers or a name tag suit you.

Who should buy Factory New

• Collectors who want the pattern in its cleanest form.
• Players building a neat tan or military-themed loadout.
• The choice for those who want the full finish and nothing less.