One knife. Multiple personalities. The Arena Modulus isn’t just an OTF — it’s your daily edge, reimagined. With a rock-solid double-action mechanism and a clean, textured black chassis, it looks sharp before it even deploys. But the real magic? Swap out your blade style on the fly — no tools, no downtime, just pure adaptability. The reverse button-lock on this knife is super reliable and does not introduce any additional blade-play into the action.
Whether you're feeling tactical or just tactical-cool, the Modulus lets you snap in the blade that fits your current vibe. Tanto, dagger, or hawkbill? Just pick, click, and carry on. If you're feeling extra beardy, you can even opt to slip the optional beard-comb blade in the mini pocket of your jeans.
Knife Package Features:
Rugged all-metal construction with a textured handle for supreme grip
Tool-free interchangeable blade system — change your style in seconds with the button-lock on the back side
Razor-sharp, 9Cr18MoV steel blades with aggressive profiles
Hard-shell carry case for safe storage
Includes Arena Accessories microfiber storage pouch
Modulus Specifications:
Brand new in hard-shell, waterproof carry case
Overall length: ~8" inches
Blade length: ~2.75" inches (2.5" edged portion) - all four blades are included!
Handle length: 5.5" inches
Blade material: 9Cr18MoV stainless steel, dual-edge spear point (comb is 5Cr15MoV)
Blade finish: Satin / silver or black-coated combo
Handle material: Aircraft aluminum with anodized coating (black or OD green)
EDC Weight: ~4.5 ounces
Smooth dual-action automatic (D/A) operation
Slide switch deployment and retraction
Deep-carry pocket clip (non-reversible)
Glass breaker pommel with lanyard hole
Extras: Arena Accessories Deluxe Microfiber Drawstring Storage Pouch
Be bold. Be modular. Be ready for anything. The Arena Modulus doesn’t just adapt — it moves with you.
LEGAL: Please check your local laws prior to purchasing. Buyer agrees that they are of legal age and circumstance to both purchase and own this knife in their state.