Microtech Dirac D/E Signature OTF Knife 250th Anniversary 4th of July Aluminium, Apocalyptic M390MK by Tony Marfione (225-10APS-4J250)

Microtech Dirac D/E Signature 250th Anniversary 4th of July, Apocalyptic M390MK by Tony Marfione – Anniversary OTF Folding Knife

The Microtech Dirac D/E Signature 250th Anniversary 4th of July Aluminum, Apocalyptic M390MK OTF automatic knife by Tony Marfione (225-10APS-4J250) is a commemorative double-action OTF automatic knife created to celebrate the 250th anniversary of U.S. independence. This Signature Series model combines a double-edged Dagger blade made of Böhler M390MK steel, an Apocalyptic finish, and an aluminum handle adorned with a 4th of July motif and the dates 1776–2026.

The centrally located slide controls the automatic extension and retraction of the blade, and its position allows for comfortable operation with either the right or left hand. The compact Dirac features a glass breaker with an integrated lanyard hole, a reversible titanium clip, and a unique serial number that may vary between individual units.

Böhler M390MK – Steel Developed for Microtech

The double-edged blade is made of Böhler M390MK stainless steel, developed specifically for Microtech knives. The material offers high corrosion resistance, good edge retention, and properties suitable for precision automatic construction.

D/E Dagger, flat grind and Apocalyptic

The symmetrical Dagger profile features a centrally positioned tip and two smooth cutting edges. The flat grind supports the blade’s uniform geometry, while the Apocalyptic finish gives the surface a factory-aged look and minimizes the visibility of fine scratches and scuffs.

Central slide and 1776–2026 anniversary handle

The 6061-T6 aluminum handle features a 250th Anniversary 4th of July, 1776–2026>. The central position of the slide gives the design symmetrical ergonomics, while the Double Action OTF mechanism allows for automatic deployment and retraction of the blade with a single control.

Key Features at a Glance

• Böhler M390MK — stainless steel with high corrosion resistance.
• D/E Dagger — symmetrical blade with two cutting edges.
• Flat — flat grind for consistent geometry.
• Apocalyptic — factory-aged utility finish.
• Double Action OTF — automatic blade deployment and retraction.
• Center-slide — comfortable operation with either the right or left hand.
• 1776–2026 — Signature Series anniversary decoration.
• Titanium clip — reversible tip-down design.

Technical Data

Frequently Asked Questions

How do I care for Böhler M390MK steel?

After use, clean both edges of the blade and dry them thoroughly. Despite its high corrosion resistance, do not allow moisture, salt, or corrosive substances to remain on the blade. Before long-term storage, you may apply a thin layer of preservative.

How to sharpen a D/E double-edged blade?

Each edge should be sharpened separately, maintaining its original angle and symmetry relative to the blade’s axis. The guided sharpening system makes it easier to maintain uniform geometry on both sides.

How does the central Double Action OTF mechanism work?

Pushing the central slider forward automatically extends the blade, while pulling it back retracts the blade into the Handle. The slider’s position on the main surface of the housing makes it easy to operate with either the right or left hand.

How do you clean the Dirac knife mechanism?

The blade opening and the area around the central slider should be regularly cleaned of dust, lint, and fine debris. For maintenance, you can use a small amount of a product designed for knife mechanisms, avoiding excessive lubrication.

How does the Dirac differ from the Dirac Delta?

The Dirac is shorter, lighter, and better suited for everyday carry. The Dirac Delta has a longer blade, a larger handle, and is noticeably heavier, while retaining the central slide and a similar double-action OTF design.

Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools