Description
As soon as you pick up the Microtech Dirac Delta® D/E 227-1 TA (Tan Aluminum, Black), you’ll instantly know you’re holding a bigger, more powerful version of the iconic Dirac series. This OTF automatic knife operates in D/A (Double Action) mode and features an extremely fast blade extension mechanism. The slider is located on the side of the handle, providing more natural and ergonomic control.
The model is 100% made and assembled in the USA and designed by Anthony Marfion – knifemaker and owner of Microtech Knives.
🔥 Character and philosophy
The Dirac Delta® is an enlarged version of Microtech’s first D/A OTF model with a side-mounted, recessed slider. It features a modern ergonomic handle with gently curved lines inspired by the legendary HALO® series.
The overall length of 9.25″ (235 mm) makes it an ideal compromise between a full-size tactical tool and a comfortable EDC knife. The robust construction, smooth action and distinctive symmetrical D/E blade give the Dirac Delta a strong and confident character.
🏭 About the producer
Microtech is an American brand with over 30 years of innovation in the field of automatic knives. Typical features are:
-
own patented screws (proprietary hardware)
-
innovative internal mechanism
-
integrated glass breaker
-
precision CNC production
Each knife is completely made in the USA with attention to quality, detail and long-term reliability.
🗡️ Blade – D/E Dagger
The D/E (Double Edge) Dagger blade is ground on both sides and has a pronounced center rib for added strength. There are long relief/drainage grooves on both sides that contribute to the strength of the design and distinctive appearance.
Black Finished (matt nanocomposite layer) ensures:
-
high surface hardness
-
low friction
-
excellent corrosion resistance
-
non-reflective, tactical appearance
The high flat cut provides excellent cutting properties while maintaining high penetration and strength.
The powerful blade extension and retraction mechanism requires a certain force to overcome the resistance of the spring – for safety reasons. The design allows comfortable use by both right- and left-handed users.
🔬 Steel – Böhler M390 Microclean®
The M390 Microclean® steel used is a high performance martensitic powder chrome steel:
-
20,0 % chromium (Cr)
-
1,9 % carbon (C)
-
4,0 % vanadium (V)
-
hardness approx. 59-61 HRC
It is characterized by:
-
extremely high wear resistance
-
high corrosion resistance
-
long blade retention
-
minimal maintenance
-
resistance to burr formation during grinding
It is comparable to CPM 20CV or CTS-204P and is manufactured by Böhler Edelstahl in Austria.
🧩 Handle and construction
The handle is precision CNC machined from anodised 6061-T6 aluminium in Tan.
-
3D milled anti-slip texture
-
Jimping on the top and bottom of the handle
-
Recessed side slider for a more natural grip
-
Slim profile for comfortable EDC wear
-
Deep carry clip (right/left side, tip-down)
-
Clip with Microtech logo, serial number and date of manufacture
-
Glass breaker – steel tip with tungsten carbide ball
⚙️ Technical specifications
| Parameter | Value |
|---|---|
| Model | Dirac Delta® D/E |
| Product number | 227-1 TA |
| Total length | 235 mm |
| Blade length | 95.2 mm |
| Blade thickness | 3.0 mm |
| Handle length | 140 mm |
| Handle thickness | 12.7 mm |
| Weight | 129 g |
| Blade material | Böhler M390 Microclean® |
| Hardness | approx. 59-61 HRC |
| Clipping | Flat |
| Blade surface | Black |
| Handle material | 6061-T6 aluminium |
| Handle colour | Tan |
| Mechanism | D/A OTF – Slide Lock |
| Opening | Automatic – push/pull slider |
| Clip | Right/left, tip-down |
| Designer | Anthony Marfione |
| Country of origin | USA |
✅ Main benefits
-
Extremely fast D/A OTF mechanism
-
Symmetrical D/E blade with high penetration
-
Premium M390 Microclean® steel
-
Ergonomic handle with recessed slider
-
Fully reversible wearing
-
100% American made
⚠️ Possible restrictions
-
The double blade is not ideal for all types of common work
-
Automatic mechanism requires regular maintenance
-
Higher price category corresponding to the premium class
🛠️ Maintenance and care
-
Clean and dry the blade after use to preserve its longevity
-
Keep the handle dry and clean, especially after contact with moisture
-
For longer storage, lightly lubricate the blade with protective oil
-
For sharpening blades, we recommend the Spyderco Tri-Angle Sharpmaker Complete Sharpening System 204MF – also ideal for smooth blades. 🛒 Buy on our website Moskito.cz
Regular maintenance ensures reliable operation of the mechanism and long-lasting sharpness.
🎯 Recommended for
-
Demanding EDC users
-
Professional tactical use
-
Collectors of premium OTF models
-
Users who prefer a symmetrical D/E blade
⭐ Final rating
The Microtech Dirac Delta® 227-1 TA combines an aggressive symmetrical blade, modern ergonomics and an extremely fast OTF mechanism. With premium M390 steel, American manufacturing and precision craftsmanship, this is a powerful and prestigious model for users looking for quality without compromise 🔪🔥












Reviews
There are no reviews yet.