Microtech Dirac Delta Auto OTF Knife – 3.79” Double Edge Blade, Stonewash, Blue Handle – Made in USA (227-10BL)

Larger platform. Forward switch control. Built for those who want more in hand.

The Microtech Dirac Delta takes the forward-thinking design of the Dirac and scales it up into a more substantial platform. With a longer handle and larger blade, it offers a fuller grip while keeping the same intuitive forward-mounted switch.

This version features a 3.79” stonewashed double edge dagger blade paired with a blue aluminum handle, giving it a clean, standout look in a larger OTF format.

Specifications

• Model: Dirac Delta

• Blade Length: 3.79”

• Closed Length: 5.63”

• Blade Style: Double Edge Dagger

• Blade Steel: Bohler M390MK

• Blade Finish: Stonewash

• Handle: Blue Aluminum

• Action: Out-the-Front Automatic (OTF)

• Pocket Clip: Tip-Down

• Glass Breaker: Yes

• Lanyard Hole: Yes

• Weight: 1.00 lb

• Country of Origin: USA

• SKU: 227-10BL

Forward Switch Design

Like the original Dirac, the Delta features a forward-mounted actuator.

• Naturally positioned for thumb use

• Improved control during deployment

• Distinct feel compared to traditional OTF layouts

It’s one of the most ergonomic OTF designs Microtech offers.

Scaled-Up Dirac Platform

The Dirac Delta builds on the original with more size and presence.

• Longer handle for a full, secure grip

• Larger blade for increased cutting reach

• More substantial feel without losing balance

It’s a natural step up for those who want more knife without changing the design.

Stonewashed Double Edge Blade

The stonewashed dagger blade keeps things clean and functional.

• Helps hide wear over time

• Reduces glare

• Maintains a balanced, symmetrical profile

Automatic OTF Action

The double-action OTF system allows for:

• Fast deployment

• Quick retraction

• One-handed operation

Built for consistency and ease of use.

Made in the USA

Microtech manufactures the Dirac Delta in the USA, maintaining tight control over machining, assembly, and quality.

Why This One Stands Out

The Dirac Delta offers the same forward switch design people like in the Dirac, but with a larger, more substantial platform.

With the stonewashed blade and blue handle, this version keeps things clean while delivering increased size and presence.

If you’re looking for a USA-made OTF that offers more grip, more reach, and the same refined control, this one delivers.