Factory New

660.89

Minimal Wear

779.00

Colors

Collections

Price Statistics

LiquidityHigh
99.29%
Current Price660.89
90d Price Range
657.354%935.38
7 Days Low657.35
7 Days High708.82
7d Change-5.63%
30 Days Low657.35
30 Days High776.72
30d Change-9.23%
90 Days Low657.35
90 Days High935.38
90d Change-26.49%
All time low
191.62Jan 3, 2023
All time high
1 213.74Oct 7, 2025
TypeRifles
WeaponM4A1-S
Finish

Blue Phosphor

Rarity

Classified

Exterior

Factory New

Model Version

CS2

Popularity

unpopular

Pro players

Brollan

Brollan

torzsi

torzsi

flameZ

flameZ

br0

br0

NAF

NAF

sl3nd

sl3nd

Krimbo

Krimbo

FalleN

FalleN

M4A1-S | Blue Phosphor (Factory New)
4.2
709
side image
Classified

M4A1-S | Blue Phosphor (Factory New)

With a smaller magazine than its unmuffled counterpart, the silenced M4A1 provides quieter shots with less recoil and be...
M4A1-S | Blue Phosphor (Factory New)
4.2
709

24h Change

- 1.35
-0.20%

7d Change

- 39.88
-5.63%

30d Change

- 68.00
-9.23%
With a smaller magazine than its unmuffled counterpart, the silenced M4A1 provides quieter shots with less recoil and be...

Factory New

660.89

Minimal Wear

779.00

Active offers

2.7

91 Vote(s)

Active offers

332

From660.89
Original price4 500

4.2

100 Vote(s)

Active offers

613

From671.19
Original price4 570

4.8

7.7K Vote(s)

Active offers

438

From671.36

4

108 Vote(s)

Active offers

613

From673.87

4.2

15 Vote(s)

Active offers

177

From674.99
Original price4 596

3.8

1.7K Vote(s)

Active offers

261

From677.66

Colors

Price Statistics

LiquidityHigh
99.29%
Current Price660.89
90d Price Range
657.354%935.38
7 Days Low657.35
7 Days High708.82
7d Change-5.63%
30 Days Low657.35
30 Days High776.72
30d Change-9.23%
90 Days Low657.35
90 Days High935.38
90d Change-26.49%
All time low
191.62Jan 3, 2023
All time high
1 213.74Oct 7, 2025

Collections

TypeRifles
WeaponM4A1-S
Finish

Blue Phosphor

Rarity

Classified

Exterior

Factory New

Model Version

CS2

Popularity

unpopular

Pro players

Brollan

Brollan

torzsi

torzsi

flameZ

flameZ

br0

br0

NAF

NAF

sl3nd

sl3nd

Krimbo

Krimbo

FalleN

FalleN

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Question hub

As of May 17, 2026, the lowest market price of M4A1-S | Blue Phosphor (Factory New) is $660.89 with 336 active listings across tracked marketplaces. Prices update continuously and vary by marketplace and item condition.

M4A1-S | Blue Phosphor (Factory New) is tradable on the Steam Community Market and several third-party CS2 marketplaces. CSMarketCap aggregates current listings and prices from these sources so you can compare offers before buying.

Over the past 7 days, the price of M4A1-S | Blue Phosphor (Factory New) changed by -5.63%. The all-time high recorded on CSMarketCap is $1,213.74. See the chart above for the full price history.

Description

Overview

The M4A1-S | Blue Phosphor is a striking skin featuring a vibrant blend of electric blue and white colors. It belongs to the Prisma 2 Collection, and was introduced in March 2020.

Rarity

This skin is considered 'Covert', making it notoriously rare with extremely low drop chances. This rarity combined with its eye-catching design make it a valuable inventory item.

History

Introduced in the Prisma 2 case in March 2020, the M4A1-S | Blue Phosphor quickly stood out with its bold and bright design compared to other skins.

Popularity

Thanks to its vivid, distinctive design, the Blue Phosphor is popular among both professional and casual players. It's often highlighted in gameplay videos due to its striking appearance.

Compatibility

This skin is exclusive to the M4A1-S rifle.

Unique Features

One of the Blue Phosphor's striking features is its vibrant blue glow-in-the-dark design that covers the entire body of the gun, giving it a visually impactful look.

Event

This skin was introduced during the Prisma 2 case release, which introduced a series of new and colorful skins.

Trivia

The design of the Blue Phosphor is inspired by phosphorescence, a type of luminescence that occurs when substances emit light after being energized.

Skin Designer

Designed by Valve.

Technical Features

The M4A1-S | Blue Phosphor features a high-quality design with intricate detail, showcasing a color-shifting effect that intensifies or fades depending on the viewing angle.

Reviews and Ratings

The Blue Phosphor has positive community reception, noted for its aesthetics and rarity. Players often describe it as one of the most visually compelling M4A1-S skins.

Historical Significance

The introduction of the Blue Phosphor marked a continued shift towards more visually dramatic and innovative designs in the world of CS:GO skins.

Reasons for Popularity

Its vibrant blue and white colours, combined with the rare and high-tier status, make the M4A1-S | Blue Phosphor highly sought after by the players.

Influential Events

The introduction of the Blue Phosphor in the Prisma 2 case had significant influence on the popularity of this skin.

Creation Story

The Blue Phosphor was designed with the concept of a vibrant, glow-in-the-dark look in mind, to make it stand out among other skins.

Symbolism and Design Elements

The Blue Phosphor serves as a great example of the concept of phosphorescence being effectively executed in a weapon skin, resulting in a unique design that overshadows the weapon's destructive nature.

Emotional Connection

The eye-catching design and the rarity of the Blue Phosphor creates a deep emotional connection with the players, turning it into a desired possession.

Impact on Community

This skin has spurred designers to experiment with more glowing, bright designs in their skins.

Usage in Esports

The Blue Phosphor is frequently seen in major esports tournaments due to its unique design and high status.

Player Stories

Players often share their thrill and excitement of unboxing the Blue Phosphor from the Prisma 2 case, adding to its legend in the community.