USP-S | Serum
Metallic digital patterning over a chrome base coat defines the USP-S | Serum, a Classified pistol skin from The Arms Deal 2 Collection available in CS:GO Weapon Case 2. Multiple metallic paints with varying reflectivities layer over the chrome foundation, creating shifting visual depth depending on in-game lighting angles. The float range caps at 0.25, restricting the skin to Factory New and Minimal Wear condition only, which means the chrome and metallic detailing remains largely pristine across all obtainable copies. StatTrak versions are available for this early-era Classified pistol finish.
Cheapest wear we have on this page. Pattern / float overpay is extra.
CS:GO Weapon Case 2: (case+key) ÷ drop chance. Average, not a promise.
Ten of this rarity → Covert in The Arms Deal 2 Collection. Avg listed output $103.49.
Price History & Performance
Price by Wear
USP-S | Serum cannot roll Well-Worn, Battle-Scarred because its float cap is 0–0.25. Wear ranges.
Cases & Drop Odds for USP-S | Serum
Probability of unboxing this skin per single case open, expected number of opens until you get one, and the case's expected return based on the current market value of every skin inside.
| Case | Drop Chance | Expected Opens | Open Cost | Market EV | EV vs Cost |
|---|---|---|---|---|---|
 CS:GO Weapon Case 2 | — | — | $38.11 | $0.65 | -98.3% |
Drop chance = official rarity odds ÷ size of that rarity pool inside the case. Market EV is the probability-weighted average of every skin's lowest current listing. "EV vs Cost" compares that EV against the case + key price — negative means opening loses money on average.
Where to Buy USP-S | Serum
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