Tekto Knives has officially released the F4 Echo, a new collaboration knife created with Zastava Arms USA. The drop brings together modern folding knife performance with design details inspired by classic rifle heritage, delivering a knife built for control, confidence, and real-world carry.
The F4 Echo is a manual flipper with a smooth button-lock system, allowing fast, deliberate action by flip or button press, followed by a controlled close. It is not automatic. It is built for users who value precision and purpose.
Built with a CPM S35VN blade and a lightweight T6 aluminum handle, the F4 Echo balances strength and agility. G10 inlays and vented handle cutouts echo Zastava's iconic rifle handguard and barrel vents, carrying proven design language into a modern folding knife.
Offered in Serbian Red, American Walnut, and Tactical Black, the F4 Echo marks the next chapter in Tekto's collaboration line, built to be carried, used, and trusted.
F4 Echo Specifications:
Model: F4 Echo
Collaboration: Tekto Knives x Zastava Arms USA
Knife Type: Manual flipper folding knife
Lock Type: Button-lock
Blade Steel: CPM S35VN
Handle Material: T6 aluminum with G10 inlays
Inlay Colors: Serbian Red, American Walnut, Tactical Black
Deployment: Flip tab or button release
Design Inspiration: Zastava rifle handguard and barrel vents
For more information:
https://www.tektoknives.com/products/f4-echo
Dealer locator:
https://www.tektoknives.com/pages/store-locator