Microtech Dirac Delta D-E OTF Automatic Black Standard Purple 3.75" AUMT2271PU

The Microtech Dirac Delta D/E OTF Automatic in black and purple is a precision-built tool designed for those who demand top-tier performance in their everyday carry. Proudly made in the USA, this double-action out-the-front automatic knife delivers reliability, speed, and solid construction in a sleek, tactical package.

With an overall length of 9.25 inches, the Dirac Delta offers the reach and control of a full-sized blade while maintaining an ergonomic and slim profile. The 3.75-inch dagger blade is crafted from premium Bohler M390 steel, known for its outstanding edge retention, corrosion resistance, and toughness. Finished in a tactical black coating, the plain-edge blade provides clean cuts and piercing power from either side, making it ideal for versatile everyday or defensive use.

One of the Dirac Delta’s standout features is its top-mounted thumb slide, a first for Microtech’s OTF lineup. This design not only allows for intuitive and rapid deployment and retraction but also keeps the handle profile smooth and unobtrusive for a comfortable grip. The contoured purple aluminum handle echoes the ergonomic design of Microtech's HALO series, offering excellent control and reduced hand fatigue during prolonged use.

Built into the base of the handle is Microtech’s signature carbide glass breaker—a functional tool for emergency situations. The tip-down deep-carry pocket clip ensures secure and discreet pocket presence, whether you're carrying right- or left-handed. With its 4.55 oz. weight, the Dirac Delta balances solid feel with lightweight comfort, making it a go-to for everyday carry without compromise.

Every aspect of this knife reflects Microtech’s commitment to tight tolerances, quality materials, and field-tested durability. Whether you're a tactical professional, first responder, or gear enthusiast, the Dirac Delta brings a dependable, refined cutting tool to your rotation—one that’s as capable as it is bold. Check out SMKW to view our large variety of Microtech knives!