How to Trade Up to M249 | Aztec
M249 | Aztec 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
- $2.60 10 × cheapest input
- Expected value
- $0.52 mean of the outcome pool
- Margin
- -80% $-2.08 per contract
Buying is cheaper than rolling. A Field-Tested M249 | Aztec costs $0.48 outright, against $2.60 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 M249 | Aztec specifically.
MAC-10 | Classic Crate
SCAR-20 | Assault
Glock-18 | Sacrifice
MAG-7 | Popdog
MAC-10 | Classic Crate
Glock-18 | Sacrifice
Dual Berettas | Elite 1.6
Tec-9 | Flash Out
FAMAS | Decommissioned
FAMAS | Decommissioned
Dual Berettas | Elite 1.6
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 Machinegun skin in the pool, so M249 | Aztec is one of 5 equally likely results. These are the other 4.
| Outcome | Odds | Cheapest price |
|---|---|---|
| P250 | Inferno | 20% | $0.63 |
| Five-SeveN | Buddy | 20% | $0.53 |
| UMP-45 | Plastique | 20% | $0.52 |
| M249 | Aztecyour target | 20% | $0.48 |
| MP5-SD | Agent | 20% | $0.43 |
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 M249 | Aztec’s range of 0.00–0.75. 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 | 0.0467 |
| Minimal Wear | 0.1100 | 0.1467 |
| Field-Tested | 0.2650 | 0.3533 |
| Well-Worn | 0.4150 | 0.5533 |
| Battle-Scarred | 0.6000 | 0.8000 |
“Not reachable” means M249 | Aztec’s own float range never enters that exterior band — no combination of inputs can produce it.
What M249 | Aztec 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 | $0.48 | −$2.12 |
| Battle-Scarred | $0.50 | −$2.10 |
| Well-Worn | $0.50 | −$2.10 |
| Minimal Wear | $1.23 | −$1.37 |
| Factory New | $3.03 | +$0.43 |
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.