How to Trade Up to M4A1-S | Decimator
M4A1-S | Decimator drops from Spectrum CaseSpectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, Spectrum Case, so any contract that can produce it needs 10 Restricted skins from those same cases. Here is what the contract costs, what else it can land on, and the input float you need for each exterior.
- Odds per contract
- 33.33% 1 in 3
- Contract cost from
- $1230.00 10× cheapest input
- Expected value
- $1176.00 mean of the outcome pool
- Margin
- -4.4% $-54.00 per contract
Buying is cheaper than rolling. A Battle-Scarred M4A1-S | Decimator costs $1169.00 outright, against $1230.00 for a contract with a 33.33% chance of producing one. Trade up for the process, not the value.
The contract
Ten inputs, all Restricted, all from Spectrum CaseSpectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case or Spectrum Case. Concentrating every input in one case is what keeps your odds at 33.33% — mixing cases splits the probability across both pools and lowers your chance at M4A1-S | Decimator specifically.
UMP-45 | Scaffold
MAC-10 | Last Dive
XM1014 | Seasons
M249 | Emerald Poison Dart
UMP-45 | Scaffold
UMP-45 | Scaffold
M249 | Emerald Poison Dart
MAC-10 | Last Dive
XM1014 | Seasons
M249 | Emerald Poison Dart
XM1014 | Seasons
MAC-10 | Last Dive12 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 Spectrum CaseSpectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case / Spectrum Case draws uniformly from every Classified Rifle skin in the pool, so M4A1-S | Decimator is one of 3 equally likely results. These are the other 2.
| Outcome | Odds | Cheapest price |
|---|---|---|
| AWP | Fever Dream | 33.33% | $1183.00 |
| CZ75-Auto | Xiangliu | 33.33% | $1176.00 |
| M4A1-S | Decimatoryour target | 33.33% | $1169.00 |
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 M4A1-S | Decimator’s range of 0.00–0.85. 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 | 0.0412 |
| Minimal Wear | 0.1100 | 0.1294 |
| Field-Tested | 0.2650 | 0.3118 |
| Well-Worn | 0.4150 | 0.4882 |
| Battle-Scarred | 0.6500 | 0.7647 |
“Not reachable” means M4A1-S | Decimator’s own float range never enters that exterior band — no combination of inputs can produce it.
What M4A1-S | Decimator 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 |
|---|---|---|
| Battle-Scarred | $1169.00 | −$61.00 |
| Field-Tested | $1219.00 | −$11.00 |
| Well-Worn | $1418.00 | +$188.00 |
| Minimal Wear | $1901.00 | +$671.00 |
| Factory New | $5086.00 | +$3856.00 |
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.