The Microtech Dirac Delta OTF Auto D/E Signature Series Sand Dune Camo Full Serrate takes the proven design of the original Dirac and scales it up for those who want a more substantial out-the-front automatic knife. Made in the USA, this double-action OTF combines a rugged ergonomic chassis with Microtech’s innovative internal mechanism, dependable automatic deployment, and an integrated glass breaker.
Measuring 9.4 inches overall with a 3.79-inch blade, the Dirac Delta delivers a robust presence while maintaining the streamlined handling that made the original Dirac design so popular. At just 4.6 ounces, it balances its larger dimensions with a lightweight feel that's easy to carry and ready for everyday tasks, outdoor use, or collection.
The blade features a distinctive double-edge configuration, with one side fully serrated and the opposite side finished with a plain edge. This combination gives the knife two different cutting surfaces in one compact OTF platform. The serrated edge provides aggressive bite through fibrous materials, while the plain edge offers a clean cutting surface for more controlled everyday tasks.
Both the blade and handle are finished in Microtech’s Sand Dune Camo Signature Series pattern, giving this Dirac Delta a rugged appearance with a distinctive field-inspired look. The matching finish across the knife creates a cohesive design that stands out without sacrificing the practical character expected from a Microtech OTF.
As a double-action OTF, the Dirac Delta’s blade deploys and retracts with the integrated firing button, allowing the knife to be operated from a single control point. The ergonomic chassis is designed to sit comfortably in the hand, while the larger dimensions give the Dirac Delta a more substantial feel than its smaller predecessor.
An integrated glass breaker adds another practical feature to the handle, keeping emergency-oriented functionality built directly into the knife. Combined with its American-made construction, dual-edge blade, Signature Series styling, and proven OTF mechanism, the Dirac Delta offers a distinctive combination of size, function, and Microtech craftsmanship.
Whether you're adding to a Microtech collection or looking for a larger OTF with a memorable finish, the Dirac Delta Signature Series Sand Dune Camo brings the iconic Dirac platform into a more robust format.
Available at Smoky Mountain Knife Works, a Tennessee landmark and the world’s largest knife store.
