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Home Products S2 GOI


by Extrema Ratio

SKU 1051985

Date Added 08/16/2022

# Available This product is out of stock

Price $300.00


S.E.R.E. 2 G.O.I. has been adopted by Italian Navy Special Forces ran through the same development as the S.E.R.E. 1, created by a study group composed of Special Forces operators, martial arts and experts in survival techniques. This variant has been redesigned following the requests of the Italian Navy Seals.

The acronym stands for “Survival, Evasion, Resistance and Escape”, the four cornerstone concepts for training courses administered to high risk of capture military personnel.

The unique grip of the S.E.R.E. 2 G.O.I., unlike the classic blades of this type, is designed to be wielded with the blade projecting between the index and middle finger, forming a single straight line from blade-tip to the wrist, and allowing for a reverse grip. The handle has the same ergonomics as the grip of a firearm and allows an instinctive and immediate use. The tip is shaped to maximize penetration, while it's deltoid profile grants it toughness.

One edge is partially serrated – useful for cutting ropes – while the opposite edge features a standard design halyard-cutter, which has interchangeable blades. 

The central blade hole which has the function of making the blade lighter, recalls the maritime origins of its creators. The peculiarity of the knife is that it has been specifically designed to be used even without the handle; the two holes in the part dedicated to the handle facilitate assembly.

The Kydex sheath has basic retention that can be used alone for operators who need extremely fast knife use, and a removable lock if needed. The knife comes with double safe to be fixed both on the right and left sides. An insert with a flat-blade screwdriver is available as an accessory. It comes with belt clip for belt fastening and paracord for fixing on the M.O.L.L.E. system.


  • Blade Length: 5.83"
  • Cutting Edge: 3.38"
  • Handle Length: 4.00"
  • Overall Length: 8.54"
  • Blade Thickness: 0.25"
  • Blade Material: Bohler N690 Stainless Steel
  • Blade Hardness: 58 HRC
  • Blade Style: Tanto
  • Blade Grind: Compound
  • Blade Finish: Black
  • Blade Edge: Partially Serrated with False Top Edge
  • Handle Thickness: 0.86"
  • Handle Material: Forprene
  • Handle Color: Black
  • Sheath: Molded Black Kydex with Tek-Lok
  • Weight: 10.8 oz.
  • Made in Italy

Comes with original box, sheath, extras and papers. Sheathing marks are visible on the blade otherwise the knife is in Excellent condition.

Product Details

Blade Length 3.5

Overall Length 8.75

Weight (oz) 10.89

Source Previously owned

Additional Specs

Knife Type Has Sheath, Hidden Tang

Blade Material N690

Blade Details Dagger, Tanto, Has Serrations

Handle Material Rubber

About the Maker

Extrema Ratio
Extrema Ratio

Extrema Ratio, located in Prato, Italy, has been designing, manufacturing and selling high performance combat, military, kitchen, hunting and tactical knives since 1997. Extrema specializes in the development and production of professional cutlery for military, public security and rescue use.

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