CobraTec Large FS-3 Carbon Fiber Automatic Knife

The CobraTec Large FS-3 Carbon Fiber 3DAGNS automatic knife is a full-size OTF model that combines an aggressive dagger design, lightweight carbon construction, and a reliable automatic mechanism for everyday and tactical use.

The FS-3 is one of CobraTec’s standout OTF knives, and in the Large version it offers full-size dimensions suitable for more demanding use as well. The Carbon Fiber variant delivers a modern technical look, reduced weight, and at the same time maintains high structural strength.

The dominant feature of the knife is a dagger blade approximately 8–9 cm long (approx. 3.25–3.5″), designed for maximum penetration and symmetrical performance. This profile is ideal for tactical use and rapid deployment.

As soon as you take the knife in hand, its combination of lightness and robustness stands out immediately. The carbon handle feels premium while also ensuring a secure and stable grip.

The blade is made from D2 tool steel, which offers good hardness, long edge retention, and solid wear resistance. This material is a proven standard in the EDC knife category.

Operation is handled by an OTF double-action mechanism, allowing quick blade deployment and retraction with one hand using a sliding button. The mechanism is designed for smooth and reliable action.

The construction also includes a pocket clip for secure carry and a glass breaker, expanding the knife’s usefulness in emergency situations.

The knife comes in standard CobraTec packaging and is covered by the manufacturer’s lifetime warranty.

OTF mechanism (double action)

Operation Sliding button

Additional features Glass breaker