Extrema Ratio Silente Knife, Black Forprene, Black MIL-C N690 (04.1000.0370/BLK)
- The Silente Black Forprene, Black MIL-C N690 is an advanced fixed-blade tactical knife. It features a Spear Point-profile blade made of N690 steel and a Forprene handle with integrated pliers, a wire cutter, and a glass breaker.
562,39 €Extrema Ratio Silente Black Forprene Knife, Black MIL-C N690 (04.1000.0370/BLK)
The Extrema Ratio Silente is a feature-rich professional-grade fixed-blade knife that combines a Böhler N690 blade with a black Forprene handle and a range of additional utility features. The design includes integrated pliers, a wire and steel cable cutter, a glass breaker, and a dedicated sheath designed for thigh mounting or MOLLE attachment.
The 163 mm blade features a Spear Point profile, a flat grind, and a black MIL-C-13924 Burnishing finish. With an overall length of 309 mm and a blade thickness of 6.3 mm, the Silente is a robust tool designed for tasks requiring high durability and extensive functionality.
Böhler N690 with a hardness of 58 HRC
The blade is made of Böhler N690 steel, hardened to 58 HRC. This steel combines good corrosion resistance, edge retention, and properties suitable for professional-grade utility knives.
Spear Point, flat grind, and MIL-C-13924 burnishing
The Spear Point profile provides a symmetrical, robust geometry with a distinctly defined tip, while the flat grind facilitates versatile cutting. The blade is finished with a black MIL-C-13924 Burnishing finish, giving the surface a subdued, technical look.
Forprene, pliers, and integrated tools
The black handle made of Forprene was designed as part of a multifunctional system. Its two-piece construction works in conjunction with the integrated pliers, which can be used to grip objects and cut wire, wire fences, and steel cables.
The tip of the tool is equipped with a tungsten carbide inlay that functions as a glass breaker. A dedicated sheath protects the blade even when using the pliers and allows for quick, silent deployment of the knife.
Key Features at a Glance
- Böhler N690 – blade steel with a hardness of 58 HRC.
- Spear Point – a strong, symmetrical blade profile.
- Flat – flat grind.
- MIL-C-13924 Burnishing – black technical finish on the blade.
- Forprene – a black, utility-style handle.
- Integrated pliers – for gripping and auxiliary tasks.
- Cutter – for wire, wire fences, and steel cables.
- Glass Breaker – tungsten carbide inlay.
- Tactical Sheath – sheath with a quick and silent retention system.
- MOLLE / thigh compatible – can be mounted on the thigh or in a MOLLE system.
Technical Data
| Product Number | 04.1000.0370/BLK |
| Product Name | Extrema Ratio Silente Black Forprene, Black MIL-C N690 |
| Overall length | 309 mm / 12.16" |
| Blade length | 163 mm / 6.41“ |
| Blade Thickness | 6.3 mm / 0.24” |
| Handle Length | N/A |
| Handle thickness | N/A |
| Weight | 338 g / 11.92 oz |
| Blade material | Böhler N690 |
| Blade hardness (HRC) | 58 HRC |
| Blade edge finish | Flat |
| Blade finish | MIL-C-13924 Burnishing |
| Handle material | Forprene |
| Handle finish color | Black |
| Sheath | Tactical Sheath, MOLLE / thigh compatible |
| Additional Accessories | None |
| Designer | N/A |
| Brand | Extrema Ratio |
| Manufacturer | Extrema Ratio S.r.l. |
| Country of Origin | Italy |
Frequently Asked Questions
What makes Böhler N690 steel stand out?
Böhler N690 is a stainless steel valued for its good combination of corrosion resistance, edge retention, and performance characteristics. In the Silente model, it has been hardened to 58 HRC.
What is the MIL-C-13924 Burnishing finish?
MIL-C-13924 Burnishing is a black surface finish that gives the blade a subdued, technical look and reduces light reflections.
What are the integrated pliers on the Extrema Ratio Silente used for?
The integrated pliers allow you to grip objects and cut through wire, wire fences, and steel cables, expanding the knife’s functionality beyond typical cutting tasks.
How does the glass breaker work?
At the end of the tool is an tungsten carbide inlay designed for a precise strike against glass and for use as a glass breaker.
How can the Extrema Ratio Silente sheath be carried?
The dedicated sheath can be mounted on the thigh or integrated into MOLLE gear. Its retention system allows for quick and silent release of the knife.
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