How to Trade Up to M4A1-S | Leaded Glass
M4A1-S | Leaded Glass drops from Spectrum 2 CaseSpectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 Case, Spectrum 2 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
- $1080.00 10× cheapest input
- Expected value
- $1024.33 mean of the outcome pool
- Margin
- -5.2% $-55.67 per contract
Buying is cheaper than rolling. A Battle-Scarred M4A1-S | Leaded Glass costs $1024.00 outright, against $1080.00 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 2 CaseSpectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 Case or Spectrum 2 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 | Leaded Glass specifically.
SG 553 | Phantom
UMP-45 | Exposure
MP9 | Goo
MP9 | Goo
CZ75-Auto | Tacticat
XM1014 | Ziggy
CZ75-Auto | Tacticat
SG 553 | Phantom
XM1014 | Ziggy
MP9 | Goo
SG 553 | Phantom
XM1014 | Ziggy12 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 2 CaseSpectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case / Spectrum 2 Case draws uniformly from every Classified Rifle skin in the pool, so M4A1-S | Leaded Glass is one of 3 equally likely results. These are the other 2.
| Outcome | Odds | Cheapest price |
|---|---|---|
| PP-Bizon | High Roller | 33.33% | $1037.00 |
| M4A1-S | Leaded Glassyour target | 33.33% | $1024.00 |
| R8 Revolver | Llama Cannon | 33.33% | $1012.00 |
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 | Leaded Glass’s range of 0.00–0.70. 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 | 0.0500 |
| Minimal Wear | 0.1100 | 0.1571 |
| Field-Tested | 0.2650 | 0.3786 |
| Well-Worn | 0.4150 | 0.5929 |
| Battle-Scarred | 0.5750 | 0.8214 |
“Not reachable” means M4A1-S | Leaded Glass’s own float range never enters that exterior band — no combination of inputs can produce it.
What M4A1-S | Leaded Glass 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 | $1024.00 | −$56.00 |
| Well-Worn | $1065.00 | −$15.00 |
| Field-Tested | $1069.00 | −$11.00 |
| Minimal Wear | $1125.00 | +$45.00 |
| Factory New | $5026.00 | +$3946.00 |
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.