About the M9 Bayonet | Gamma Doppler
M9 Bayonet | Gamma Doppler is a Rare Special Item knife that drops from 2 of the 42 CS2 weapon cases: Gamma Case and Gamma 2 Case.
The earliest of them is the Gamma Case, released on 15 June 2016.
Each open has a 0.0087% chance (about 1 in 11,538) of pulling it, as one of 30 Rare Special Item finishes in every one of those cases. One in ten of those drops is StatTrak.
It sits in tier 5 of 5 (Mil-Spec to Rare Special) and ranks #3 of 47 finishes in the Gamma Case by top-wear Steam price.
Its Steam price runs from $1,322.62 to $1,622.88 across wears, against $6.79 to open the Gamma 2 Case (case plus $2.50 key), so every wear is worth more than one open.
It is listed once with 5 phases: Valve does not publish phase odds, so the odds above are for the finish as a whole.
Cases that drop the M9 Bayonet | Gamma Doppler
Chance per open = Valve's Rare Special Item odds divided by the number of Rare Special Item finishes in that case. StatTrak versions drop 10% of the time. Open any of these free in the simulator: demo, nothing won. 18+.
| Case | Chance per open | About 1 in | StatTrak | Cost / open | Released |
|---|---|---|---|---|---|
| Gamma Case1 of 30 Rare Special Item | 0.0087% | 11,538 | 0.00087% | $6.86 | 15 June 2016 |
| Gamma 2 Case1 of 30 Rare Special Item | 0.0087% | 11,538 | 0.00087% | $6.79 | 18 August 2016 |
M9 Bayonet | Gamma Doppler wears, float ranges and prices
Steam market 7-day average prices from 2026-10-03. Our item data has no per-skin float cap, so the standard 0.00 to 1.00 scale and the five wear bands are shown. A wear without a price had no recent sales or does not exist for this skin.
| Wear | Float range | Price | StatTrak |
|---|---|---|---|
| Factory New | 0.00 to 0.07 | $1,622.88 | $1,712.83 |
| Minimal Wear | 0.07 to 0.15 | $1,322.62 | $1,909.29 |
| Field-Tested | 0.15 to 0.38 | No price | No price |
| Well-Worn | 0.38 to 0.45 | No price | No price |
| Battle-Scarred | 0.45 to 1.00 | No price | No price |
M9 Bayonet | Gamma Doppler FAQ
What are the odds of getting the M9 Bayonet | Gamma Doppler?
0.0087% per Gamma Case open (1 in 11,538); 0.0087% per Gamma 2 Case open (1 in 11,538). That is Valve's 0.26% Rare Special Item chance split evenly across the finishes in that tier. A StatTrak copy is one tenth of that, 0.00087% at best.
Which CS2 cases drop the M9 Bayonet | Gamma Doppler?
Gamma Case and Gamma 2 Case. The cheapest to open is the Gamma 2 Case at $6.79 including the key.
How much is the M9 Bayonet | Gamma Doppler worth?
Factory New $1,622.88, Minimal Wear $1,322.62 on the Steam market (7-day average, 2026-10-03). StatTrak sells for $1,712.83 to $1,909.29. Wears without a price had no recent sales or do not exist for this skin.
Other Rare Special Item finishes in the Gamma Case
All CS2 skins by rarity · Open the Gamma 2 Case in the simulator (demo, nothing won, 18+) · How CS2 case odds work
This is a free simulator for entertainment: a demo, nothing is won and no money is used. Odds are Valve's published odds; wear and Doppler phase splits are estimated models, not Valve figures. Item values are indicative Steam market prices. Counter-Strike 2 and its item images are property of Valve Corporation. CaseBattles is not affiliated with or endorsed by Valve. 18+ only. Responsible gaming.