UMP-45 | K.O. Factory

Origin Story

The UMP-45 | K.O. Factory, released on April 1, 2025, as part of the Spring Forward update, draws its inspiration from classic animation cartoons. Its custom paint job features a design reminiscent of old-school animated shorts. The flavor text, "Swing and a miss!", further hints at a playful, possibly boxing-themed, aesthetic. This skin was introduced within The Fever Collection.

Drop Chance

UMP-45 | K.O. Factory is Classified, a Pink-tier skin, rare with strong collector demand. From the Fever Case: approximately 1.07% per opening (roughly 1 in 94). The 3.2% Classified tier rate is split across 3 Classified skins in the case. StatTrak versions drop at ~0.11% from the Fever Case (about 1 in 937). These per-skin odds assume equal weighting within tier — Valve publishes tier rates but doesn't formally confirm even distribution across skins in a tier.

Skin Condition

Float range 0 to 1. Exteriors: Factory New, Minimal Wear, Field-Tested, Well-Worn, Battle-Scarred. StatTrak is available in FN, MW, FT, WW, BS.

• Factory New ($15.41): The cartoon-style artwork maintains maximum color vibrancy and definition, with minimal wear on edges.
• Minimal Wear ($6.82): Very slight softening or tiny scratches appear on high-contact edges like the front barrel shroud or stock corners, usually only visible upon close inspection.
• Field-Tested ($5.02): Noticeable edge wear and small patches where underlying material shows are common, particularly on the front and side of the receiver and the magazine.
• Well-Worn ($4.98): Expect heavier wear on edges and more extensive fading across the body, with details of the cartoon artwork appearing washed or partially obscured.
• Battle-Scarred ($4.31): Significant fading and large patches of exposed base material are typical, often causing the cartoon artwork to appear eroded or heavily muted.

Model

K.O. Factory uses the current UMP-45 model, added with Spring Forward on April 1, 2025. The Gunsmith finish responds to CS2's dynamic lighting.

How to Obtain

The UMP-45 | K.O. Factory is part of The Fever Collection. As a Classified rarity skin, it can be obtained through trade-up contracts using ten lower-rarity skins from The Fever Collection. A StatTrak version is also available for kill tracking. For direct purchase, players can find the UMP-45 | K.O. Factory on the Steam Community Market or third-party marketplaces.

Price Range

UMP-45 | K.O. Factory ranges from $4.31 (Battle-Scarred) to $15.41 (Factory New). Field-Tested copies sit at $5.02. StatTrak versions carry a premium at every wear tier.


The current 7-day median is $5.46. The 90-day median is $5.69. The all-time median is $6.39. Volume averages 35 trades per day.

Visual Theme

Gunsmith: This custom paint job is inspired by old animation cartoons. The design likely features high-contrast, cartoon-style colors with bold outlines. During gameplay, the most visible elements are typically the magazine, the forward receiver, and the right side of the stock.

Player Rating

Rating: 4.00 / 5
Votes: 4

Sticker Compatibility

The UMP-45 offers multiple sticker slots, typically on the receiver, a front-side area, and sometimes the magazine. Given the "old animation cartoons" theme, bright, cartoonish, or comic-style stickers may visually complement the design. If the skin's palette is more muted, black-white, sepia, or pastel stickers could create a cohesive retro look.