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Meet the chickens
M4A4 | Mainframe (Well-Worn)
View in 3D Steam Market

Wear

FN $0.21MW $0.05FT $0.03WW $0.03BS $0.03

Details

Weapon
 M4A4
Float range
0.00 – 0.50
Category
Rifles
Paint index
780
Legacy model
No
Pattern
Mainframe
Side
Counter-Terrorists
Trade-up contracts
Eligible

Colours

Gray 76%
Black 22%
Other 2%

Market activity

Liquidity
61 / 100
Fair
Popularity
51 / 100
Fair
Demand 98
Cost to sell 0
Speed to sell 41
Market supply 90
Sales velocity 89

Steam order book

C tier liquidity
Highest buy order
$0.04
Lowest sell listing
$0.07
Spread
$0.0342.86%
7.0k buy orders 396 sell listings

Where it comes from

Renders

Well-Worn
M4A4 | Mainframe (Well-Worn) — Dust II light, front

Game files

The textures CS2 builds this skin from, extracted from the game files.

Anodized — pattern + paletteA base pattern recoloured by the palette below — same design, different colours.

Palette
Industrial Grade The 2018 Nuke Collection

M4A4 Mainframe (Well-Worn)

Well-Worn

Lowest price

$0.03

on BUFF163, the cheapest of 15 markets

Buy on BUFF163
Median
$0.06
24 hours
+20.0%
7 days
+50.0%
30 days
+20.0%

1,336 listings across all markets

Marketsfor M4A4 | Mainframe (Well-Worn)

15 with a price
  • BUFF163 Lowest
    $0.03 Buy
  • Skinport
    $0.03 Buy
  • HaloSkins
    $0.04 Buy
  • LootFarm
    $0.04 Buy
  • CS.MONEY
    $0.05 Buy
  • White.Market
    $0.06 Buy
  • Market.CSGO
    $0.06 Buy
  • ShadowPay
    $0.09 Buy
27 markets without a price

Price historyof M4A4 | Mainframe

$0.06

+20.0% over 30D·median across markets

Oct 1, 2026 Oct 31, 2026

Price by float

The lowest price you can buy at, across markets, for each float. Jumps at the wear boundaries are real.

$0.15

cheapest at float 0.4000 · typical $0.27–$0.27 · 5 listings on 1 market nearby

0.380.400.430.45
Cheapest Middle half of listings Median
Lowest cross-market price by float range
Float rangeLowest price
WW 0.38 – 0.40$0.05
0.40 – 0.42$0.04
0.42 – 0.45$0.05

In short

Origin

The M4A4 | Mainframe can be obtained by opening London 2018 Nuke Souvenir Package, Katowice 2019 Nuke Souvenir Package, Berlin 2019 Nuke Souvenir Package, Stockholm 2021 Nuke Souvenir Package, Antwerp 2022 Nuke Souvenir Package, Rio 2022 Nuke Souvenir Package, Paris 2023 Nuke Souvenir Package, Copenhagen 2024 Nuke Souvenir Package, Shanghai 2024 Nuke Souvenir Package, Austin 2025 Nuke Souvenir Package, Austin 2025 Nuke Souvenir Highlight Package, Budapest 2025 Nuke Souvenir Package, or Budapest 2025 Nuke Souvenir Highlight Package. It is also part of the The 2018 Nuke Collection collection.

Rarity

The M4A4 | Mainframe has a Industrial Grade rarity and is categorised as Rifles, with an estimated case drop chance of 4.00%.

Availability

The cheapest M4A4 | Mainframe (Well-Worn) is $0.03 on BUFF163, with prices across 15 markets ranging up to $0.99.

Price trend

Over the last 30 days the cross-market median price of the M4A4 | Mainframe (Well-Worn) went from $0.05 to $0.06 (+20.0%), with a low of $0.04 on Oct 23 and a high of $0.08 on Oct 10. That is +50.0% over the last 7 days. On the Steam Community Market the highest buy order is $0.04 and the lowest listing is $0.07 (7,042 buy orders, 396 listings).

Versions

The float value ranges from 0.00 to 0.50, available in all five wear conditions. It also has a Souvenir version.

Finish Style

This M4A4 features the Mainframe design.

Planning a contract with M4A4 | Mainframe? Simulate output floats, odds and profit in the CS2 trade-up calculator.

Guides

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M4A4 | Mainframe — Frequently Asked Questions

How much does the M4A4 | Mainframe (Well-Worn) cost?
As of Oct 2026, the cheapest M4A4 | Mainframe (Well-Worn) costs $0.03 on BUFF163. CSSkinLab compares live prices across 15 CS2 marketplaces so you always see the cheapest offer first.
What is the float range of the M4A4 | Mainframe (Well-Worn)?
The M4A4 | Mainframe (Well-Worn) has a float range of 0.00 – 0.50. Lower floats mean less visible wear on the skin. The M4A4 | Mainframe exists in 5 wear tiers: Factory New, Minimal Wear, Field-Tested, Well-Worn and Battle-Scarred.
Does the M4A4 | Mainframe come in StatTrak™ or Souvenir?
The M4A4 | Mainframe also drops as a Souvenir version from tournament packages, but it does not exist in StatTrak™.
Can I use the M4A4 | Mainframe (Well-Worn) in a trade-up?
Yes. The M4A4 | Mainframe (Well-Worn) can be used as an input in a trade-up contract: combine ten Industrial Grade skins to receive one skin of the next rarity tier. Use the CSSkinLab trade-up calculator to find the best inputs and simulate float outcomes and ROI, or work backwards from a target skin with the reverse calculator.
Where does the M4A4 | Mainframe drop from?
The M4A4 | Mainframe drops from the London 2018 Nuke Souvenir Package, Katowice 2019 Nuke Souvenir Package, Berlin 2019 Nuke Souvenir Package, Stockholm 2021 Nuke Souvenir Package, Antwerp 2022 Nuke Souvenir Package, Rio 2022 Nuke Souvenir Package, Paris 2023 Nuke Souvenir Package, Copenhagen 2024 Nuke Souvenir Package, Shanghai 2024 Nuke Souvenir Package, Austin 2025 Nuke Souvenir Package, Austin 2025 Nuke Souvenir Highlight Package, Budapest 2025 Nuke Souvenir Package and Budapest 2025 Nuke Souvenir Highlight Package with an estimated drop chance of 4.00% per opening. It belongs to the The 2018 Nuke Collection. You can also buy it directly from community marketplaces, usually for less than the cost of opening cases.
What rarity is the M4A4 | Mainframe?
The M4A4 | Mainframe is a Industrial Grade rarity skin. Rarity determines how often it drops and which trade-up contracts it fits into.