M9 Bayonet | Case Hardened

Origin Story

The M9 Bayonet | Case Hardened, released on August 14, 2013, with The Arms Deal update, features a distinctive color case-hardened finish. This finish applies wood charcoal at high temperatures, creating a mottled pattern of iridescent blue, purple, and gold over a steel base. As a high-end, pattern-dependent knife, its value is heavily influenced by the amount and placement of desirable blue or gold areas on the blade. The M9 Bayonet Case Hardened is primarily seen as a collector's item, with discussion focusing on pattern rankings and the preference for blue versus gold coverage.

Drop Chance

M9 Bayonet | Case Hardened is a knife-tier skin, so standard Valve rarity odds don't apply. Knives drop at a combined rate of approximately 0.26% from supported cases before accounting for which knife type and finish you get. Valve doesn't publish individual knife or phase probabilities.

Skin Condition

Float range 0 to 1. Exteriors: Factory New, Minimal Wear, Field-Tested, Well-Worn, Battle-Scarred. StatTrak is available in FN, MW, FT, WW, BS.

• Factory New (No Recent Price): Colors are at their most vibrant, with strong blues and purples and bright gold patches, showing minimal darkening along the edges.
• Minimal Wear ($894.81): The knife remains very vibrant, with only minor dulling on the most exposed edges and near the tip of the blade, often considered a value choice for desirable patterns.
• Field-Tested ($795.00): Noticeable dulling of colors occurs, especially on edges and mid-blade, with blues appearing darker and less saturated, and gold areas more muted.
• Well-Worn ($761.00): Case-hardening colors are significantly faded on edges and high-contact regions, with more of the blade taking on a darker, washed look.
• Battle-Scarred ($830.32): Colors are heavily muted across the blade with extensive dulling, and much of the original vibrancy is lost, though hints of blue and gold remain in lower-wear zones.

Model

Case Hardened uses the legacy M9 Bayonet model, introduced with The Arms Deal on August 14, 2013. The inspect animation and third-person appearance match the original CS:GO version.

How to Obtain

The M9 Bayonet | Case Hardened is obtainable as a rare special item from the CS:GO Weapon Case, CS:GO Weapon Case 2, and CS:GO Weapon Case 3, all part of the original Arms Deal case line. These cases are now in the rare drop pool, meaning new supply is limited. A StatTrak version is also available for kill tracking.

Price Range

M9 Bayonet | Case Hardened ranges from $830.32 (Battle-Scarred) to No Recent Price (Factory New). Field-Tested copies sit at $795.00. StatTrak versions carry a premium at every wear tier.


The current 7-day median is No Recent Price. The 90-day median is $739.03. The all-time median is $196.22. Volume averages 0 trades per day.

Visual Theme

Patina: It has been color case-hardened through the application of wood charcoal at high temperatures. This process results in iridescent blue, purple, and gold patterns over a steel base. The playside of the blade, with its distinct blue or gold patches, is most visible to the player. It is often grouped with other Case Hardened knives for pattern rankings and "blue gem" discussions.

Player Rating

Rating: 5.00 / 5
Votes: 1

Sticker Compatibility

As a knife skin, the M9 Bayonet | Case Hardened does not have sticker slots, so sticker compatibility primarily refers to matching it with other Case Hardened weapons in an inventory. Blue, teal, or purple stickers can complement blue-heavy patterns, while gold, yellow, or orange stickers pair well with gold-dominant or mixed patterns. Neutral white or gray logos offer versatility across various pattern seeds without clashing.