How to Trade Up to UMP-45 | Plastique
UMP-45 | Plastique drops from CS20 Case, so any contract that can produce it needs 10 Mil-Spec skins from that same case. Here is what the contract costs, what else it can land on, and the input float you need for each exterior.
- Odds per contract
- 20% 1 in 5
- Contract cost from
- $2.50 10× cheapest input
- Expected value
- $0.52 mean of the outcome pool
- Margin
- -79.2% $-1.98 per contract
Buying is cheaper than rolling. A Field-Tested UMP-45 | Plastique costs $0.51 outright, against $2.50 for a contract with a 20% chance of producing one. Trade up for the process, not the value.
The contract
10 inputs, all Mil-Spec, all from CS20 Case. Concentrating every input in one case is what keeps your odds at 20% — mixing cases splits the probability across both pools and lowers your chance at UMP-45 | Plastique specifically.
Dual Berettas | Elite 1.6
Glock-18 | Sacrifice
MAG-7 | Popdog
Glock-18 | Sacrifice
MAC-10 | Classic Crate
FAMAS | Decommissioned
SCAR-20 | Assault
MAC-10 | Classic Crate
Tec-9 | Flash Out
Dual Berettas | Elite 1.6
FAMAS | Decommissioned
Dual Berettas | Elite 1.612 further eligible inputs are available — open the reverse trade-up calculator to price a full contract against your own inventory.
What else this contract can land on
A contract from CS20 Case draws uniformly from every Restricted SMG skin in the pool, so UMP-45 | Plastique is one of 5 equally likely results. These are the other 4.
| Outcome | Odds | Cheapest price |
|---|---|---|
| Five-SeveN | Buddy | 20% | $0.58 |
| P250 | Inferno | 20% | $0.54 |
| UMP-45 | Plastiqueyour target | 20% | $0.51 |
| M249 | Aztec | 20% | $0.51 |
| MP5-SD | Agent | 20% | $0.48 |
Input float for each exterior
CS2 normalises float across a trade-up: each input’s float becomes a 0–1 position inside its own range, those are averaged, and the average is applied to UMP-45 | Plastique’s range of 0.00–0.80. To land a given exterior, your ten inputs must average the normalised float below.
| Target exterior | Output float | Required avg. input float |
|---|---|---|
| Factory New | 0.0350 | 0.0438 |
| Minimal Wear | 0.1100 | 0.1375 |
| Field-Tested | 0.2650 | 0.3313 |
| Well-Worn | 0.4150 | 0.5188 |
| Battle-Scarred | 0.6250 | 0.7813 |
“Not reachable” means UMP-45 | Plastique’s own float range never enters that exterior band — no combination of inputs can produce it.
What UMP-45 | Plastique is worth right now
Worth comparing against the contract cost above before you commit: buying the skin outright is frequently cheaper than rolling for it.
| Exterior | Price | vs. contract cost |
|---|---|---|
| Field-Tested | $0.51 | −$1.99 |
| Battle-Scarred | $0.52 | −$1.98 |
| Well-Worn | $0.70 | −$1.80 |
| Minimal Wear | $1.32 | −$1.18 |
| Factory New | $4.35 | +$1.85 |
Build this contract
Price a full ten-slot contract against live inputs, set your own float values, and see the outcome odds update as you go.