As soon as you pick up the Microtech Dirac Delta D/E OTF Knife Natural Clear Aluminum Stonewashed M390 227-10NC, you immediately know this is no ordinary automatic knife. This model feels extremely solid, mechanically precise, and at the same time surprisingly elegant. The combination of the Natural Clear aluminum handle, stonewashed blade, and aggressive D/E profile creates a purely premium tactical character that is typical of Tony Marfione’s designs.
The Dirac Delta is not just a flashy OTF knife – it is a high-end platform designed for maximum reliability, speed, and absolute control with every use.
🗡️ Blade – Double Edge Dagger
The D/E dagger profile is a purely tactical configuration focused on penetration speed, symmetry, and an aggressive look.
Characteristics:
double-edged dagger profile
distinctly aggressive geometry
high penetrating capability
perfectly symmetrical shape
strong tactical character
premium powder steel
extreme edge retention
high corrosion resistance
very good hardness
excellent long-term edge stability
Stonewashed finish:
hides minor scratches
supports the knife’s working look
reduces visible wear
gives the blade a more raw character
Microtech is also known for an exceptionally hard and authoritative blade deployment that feels highly mechanical and precise.
The Natural Clear Aluminum variant highlights the clean CNC machining of the aluminum alloy and gives the knife a technical, industrial look without unnecessary color effects.
Construction features:
CNC-machined aluminum handle
ergonomically chamfered edges
front-mounted switch
very secure grip
minimal play in the construction
solid and robust feel in hand
Mechanism:
double-action OTF system
powerful blade deployment and retraction
very precise action
characteristically firmer switch resistance
Accessories:
deep-carry clip
glass breaker
premium factory finish
symmetrical tactical design
The Dirac Delta feels more luxurious and more technical than most standard OTF models, and from the very first contact it is clear that this belongs to the premium segment.
Model Dirac Delta D/E
Designation 227-10NC
Type OTF automatic knife
Blade profile Double Edge Dagger
Mechanism Double-action OTF
Handle color Natural Clear
Equipment Glass breaker
Microtech Dirac Delta D/E OTF Knife Natural Clear Aluminum Stonewashed M390 227-10NC is a premium OTF knife that combines a brutal mechanical feel, top-tier craftsmanship, and iconic tactical design. It delivers exactly the kind of experience you expect from a high-end Microtech – a hard-hitting deployment, maximum precision, and absolute confidence in hand. It’s neither subtle nor inexpensive, but in the world of premium OTF models, the Dirac Delta is one of the most charismatic pieces of gear 🔥🔪
