How to Trade Up to AK-47 | Fire Serpent
AK-47 | Fire Serpent drops from Operation Bravo CaseOperation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, Operation Bravo Case, so any contract that can produce it needs 10 Classified 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
- 50% 1 in 2
- Contract cost from
- $93070.00 10× cheapest input
- Expected value
- $37058.00 mean of the outcome pool
- Margin
- -60.2% $-56012.00 per contract
Buying is cheaper than rolling. A Battle-Scarred AK-47 | Fire Serpent costs $54632.00 outright, against $93070.00 for a contract with a 50% chance of producing one. Trade up for the process, not the value.
The contract
Ten inputs, all Classified, all from Operation Bravo CaseOperation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case or Operation Bravo Case. Concentrating every input in one case is what keeps your odds at 50% — mixing cases splits the probability across both pools and lowers your chance at AK-47 | Fire Serpent specifically.
What else this contract can land on
A contract from Operation Bravo CaseOperation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case / Operation Bravo Case draws uniformly from every Covert Rifle skin in the pool, so AK-47 | Fire Serpent is one of 2 equally likely results. These are the other 1.
| Outcome | Odds | Cheapest price |
|---|---|---|
| AK-47 | Fire Serpentyour target | 50% | $54632.00 |
| Desert Eagle | Golden Koi | 50% | $19484.00 |
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 AK-47 | Fire Serpent’s range of 0.06–0.76. To land a given exterior, your ten inputs must average the normalised float below.
| Target exterior | Output float | Required avg. input float |
|---|---|---|
| Factory New | 0.0650 | 0.0071 |
| Minimal Wear | 0.1100 | 0.0714 |
| Field-Tested | 0.2650 | 0.2929 |
| Well-Worn | 0.4150 | 0.5071 |
| Battle-Scarred | 0.6050 | 0.7786 |
“Not reachable” means AK-47 | Fire Serpent’s own float range never enters that exterior band — no combination of inputs can produce it.
What AK-47 | Fire Serpent 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 | $54632.00 | −$38438.00 |
| Field-Tested | $73425.00 | −$19645.00 |
| Well-Worn | $75431.00 | −$17639.00 |
| Minimal Wear | $112189.00 | +$19119.00 |
| Factory New | $253393.00 | +$160323.00 |
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.