Microtech Dirac Delta OTF Automatic Knife Stonewash Apocalyptic Dagger/Blue AUMT22710APBL

The Microtech Dirac Delta is built for those who demand the speed and reliability of an OTF in a full-sized frame. This rugged out-the-front automatic combines Microtech's signature precision engineering with a clean, modern profile, and places the thumb slide on the face of the handle rather than the spine—resulting in a more ergonomic, intuitive deployment, even with gloves or under pressure.

Its 3.79-inch dagger blade features a one-of-a-kind Stonewash Apocalyptic finish—tough, corrosion-resistant, and ideal for hiding wear from hard use. The blade is crafted from premium steel, selected for its edge retention and overall performance. Microtech’s blade steels may vary slightly depending on batch, but each knife is made to the company’s exacting standards with top-tier materials.

The Dirac Delta’s blue anodized 6061-T6 aircraft-grade aluminum handle delivers strength without unnecessary weight, with clean machining lines and a secure, comfortable grip. Dual-action deployment and retraction is handled by the center-mounted thumb slide, allowing lightning-fast control with either hand. A hardened glass breaker adds emergency utility, while the stainless steel pocket clip rides securely and allows ambidextrous carry.

At 4.33 inches closed and weighing just 2.37 ounces, this knife feels light in the pocket but substantial in the hand. It opens to a full 9.4 inches, giving you the reach and cutting power needed for field work, tactical use, or daily carry. Like every Microtech, it’s proudly made in the USA and backed by a reputation for toughness and precision.