About the M9 Bayonet | Doppler
The M9 Bayonet | Doppler is a Covert knife skin. It was released in CS:GO in January 2015 with the Chroma Case, and it is still available in CS2.
The M9 Bayonet is one of the most popular knife models in the game, and the Doppler finish gives it a metallic candy-paint shine that comes in seven phases. Each phase has its own colors and its own price, from the common Phase 1 to the rare Ruby, Sapphire, and Black Pearl.
This page covers the M9 Bayonet Doppler as a whole. Each phase also has its own page with its own listings, linked below. The wear tabs at the top of this page show the current M9 Doppler price for each condition.
Design
The blade is finished in the Doppler style, a metallic candy coat over a black base that fades between colors along the steel. The handle stays black. The colors on this page break down as mostly blue, with grey.
The look of any copy depends mainly on its phase. Within a phase, the exact pattern shifts the colors slightly from one knife to the next.
M9 Bayonet Doppler Phases
The M9 Bayonet | Doppler comes in seven phases. Each one has its own page with listings and price history.
- Phase 1. Mostly dark, with pink and purple patches. See the M9 Bayonet Doppler Phase 1.
- Phase 2. The most pink and purple of the regular phases, and the most searched-for. See the M9 Bayonet Doppler Phase 2.
- Phase 3. Green and blue tones. See the M9 Bayonet Doppler Phase 3.
- Phase 4. Mostly blue, sometimes with purple. See the M9 Bayonet Doppler Phase 4.
- Ruby. A solid red blade, and one of the three rare gem phases. See the M9 Bayonet Doppler Ruby.
- Sapphire. A solid blue blade, and one of the rarest and most valuable phases. See the M9 Bayonet Doppler Sapphire.
- Black Pearl. A dark, near-black blade with purple and blue highlights, and the third gem phase. See the M9 Bayonet Doppler Black Pearl.
The gem phases are priced far above the regular ones, so always check which phase a listing is before you compare prices.
How to Get the M9 Bayonet | Doppler
There are three ways to get an M9 Doppler in CS2.
- Buy it from a marketplace. This is the only route that lets you choose the phase, which makes it the route almost every buyer takes. The offers at the top of this page show every marketplace with a listing.
- Open a case. The M9 Bayonet | Doppler drops from the Chroma Case, Chroma 2 Case, and Chroma 3 Case. Knife drops are rare, at around 0.26% per case, and the finish and phase you get are random.
- Trade up to it. Since October 2025, a trade-up contract using Covert skins can produce a knife from an eligible case. The finish and phase are still random.
Wear Conditions and Float
The M9 Doppler has a float range from 0.00 to 0.08, so it exists in only two wear conditions: Factory New (FN) and Minimal Wear (MW). Because the range stops at 0.08, no copy can have a float above that, and Minimal Wear only covers 0.07 to 0.08.
Because the range is so tight, wear barely shows, and the phase matters far more than the float. Use the 3D inspect tool on this page to see how a given wear looks before you buy.
Switch between conditions using the tabs above. Each one has its own listings and price history.
Variants
The M9 Bayonet | Doppler comes in a standard version and a StatTrak™ version, which counts your kills with the knife. Pricempire lists each version separately, so you can compare them using the toggle above.
What Drives the Price of the M9 Bayonet | Doppler
- Phase. The biggest factor by far. Ruby, Sapphire, and Black Pearl sit well above the regular phases, and among those, Phase 2 and Phase 4 usually carry a premium.
- Pattern within a phase. Some patterns show more of the most wanted colors, which can add value.
- Wear. With only two conditions, Factory New copies make up most of the market, and Minimal Wear copies are less common.
- StatTrak™. The StatTrak™ version is scarcer than the standard one and priced separately.
- The knife model. The M9 Bayonet is one of the most popular knives in the game, which keeps demand for its finishes high.
Compare the offers above before you buy or sell, and set a price alert if you are waiting for a particular level.
Similar Knives
If you like the M9 Doppler, these are the closest alternatives.
- Doppler on other knives. The Bayonet | Doppler, Karambit | Doppler, and Butterfly Knife | Doppler carry the same finish and phases.
- Gamma Doppler. The M9 Bayonet | Gamma Doppler is a different finish with green phases and an Emerald gem phase.
- Other Chroma finishes. The M9 Bayonet | Marble Fade and M9 Bayonet | Tiger Tooth come from the same cases.
- More choice. See the vanilla M9 Bayonet or browse all M9 Bayonet skins.
Frequently Asked Questions
How much is an M9 Bayonet Doppler?
It depends on the phase, the wear, and on whether it is StatTrak™. The wear tabs at the top of this page show the current lowest M9 Doppler price for each condition, the phase pages linked above show the price for each phase, and the price history shows how it has moved.
What case is the M9 Bayonet Doppler in?
The Chroma Case, Chroma 2 Case, and Chroma 3 Case. The finish and phase you get are random.
What are the M9 Bayonet Doppler phases?
There are seven: Phase 1, Phase 2, Phase 3, Phase 4, Ruby, Sapphire, and Black Pearl. Ruby, Sapphire, and Black Pearl are the rare gem phases.
What is the best M9 Doppler phase?
The Sapphire and Ruby are the most valuable, followed by the Black Pearl. Among the regular phases, Phase 2 is the most searched-for, and Phase 4 is also popular.
What is the difference between the M9 Bayonet Doppler and Gamma Doppler?
They are different finishes. The Doppler comes in pink, purple, blue, and red phases from the Chroma cases. The Gamma Doppler comes in green phases with an Emerald gem phase.
What is the difference between the M9 Bayonet and the Bayonet?
They are two separate knife models. The M9 Bayonet has a wider blade with a saw-toothed spine and a different inspect animation. The Bayonet Doppler has its own page, linked above.
What is the float range of the M9 Bayonet | Doppler?
0.00 to 0.08. It is only available in Factory New and Minimal Wear.
Does the M9 Bayonet | Doppler come in StatTrak™?
Yes. A StatTrak™ M9 Bayonet | Doppler exists and is listed separately on this page.
When was the M9 Bayonet | Doppler released?
In January 2015, in CS:GO, with the Chroma Case. It is still available in CS2.
Where can I buy an M9 Bayonet | Doppler?
The offers at the top of this page list every marketplace with an M9 Doppler for sale, with the lowest price for each wear condition. Check the phase on any listing before you buy.