History Of: The Microtech Ultratech Series

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History Of: The Microtech Ultratech Series

Published: March 19th, 2025

History Of - The Microtech Ultratech Series

Since its debut in 1999, the Microtech Ultratech has set the benchmark for out-the-front (OTF) automatic knives, evolving through multiple generations to maintain its reputation for precision, durability, and innovation. What started as a groundbreaking single-spring automatic knife has transformed into a meticulously refined series that continues to push the boundaries of performance and design. Each iteration has introduced cutting-edge materials, enhanced mechanisms, and ergonomic improvements, ensuring that the Ultratech remains at the forefront of the OTF market. From military and law enforcement applications to everyday carry enthusiasts, the Ultratech has earned its place as an icon in the knife industry.

Ultratech

Gen I

Microtech Ultratech Gen I

The original Ultratech, released in 1999, was a groundbreaking OTF automatic knife, featuring a single-spring deployment system and an aircraft-grade 6061-T6 aluminum handle. It quickly gained recognition for its precision craftsmanship and robust performance. Early models were available in a variety of blade profiles, including dagger, tanto, and drop point. This first generation of Ultratech knives was revolutionary due to its compact design, ambidextrous thumb slide mechanism, and incredibly fast blade deployment. Unlike many OTFs before it, the Ultratech set a high standard for reliability, earning it a place among military personnel, law enforcement, and tactical enthusiasts.

Gen II

Microtech Ultratech Gen II

The second generation of the Ultratech saw major internal refinements, focusing on smoother action and enhanced lock reliability. One of the most notable changes was the integration of a stronger spring mechanism, making blade deployment and retraction faster and more consistent. Additionally, enhancements in internal manufacturing processes allowed for more precise fitting of parts, reducing friction and wear over time. Blade steel advancements also allowed Microtech to introduce Bohler M390 and CTS-204P, two steels that significantly improved edge retention, toughness, and corrosion resistance compared to earlier iterations. These high-performance steels became the standard for Ultratech models, reinforcing Microtech’s commitment to premium materials.

Externally, the Ultratech underwent refinements in handle ergonomics and grip texture, improving control and comfort during use. The pocket clip was redesigned for better retention, allowing for a more secure and accessible carry. Additionally, Type II and Type III anodized coatings were introduced, providing superior durability and corrosion resistance for the handle finish. Another significant update was the introduction of the glass breaker feature, allowing the Ultratech to be utilized in emergency situations and further expanding its utility beyond standard cutting tasks. These refinements cemented the Ultratech’s reputation as one of the most reliable and versatile OTF knives available.

Gen III

Microtech Ultratech Gen III

The latest generation of Ultratech, introduced in 2024, has ushered in some of the most dramatic enhancements to date. One of the most notable changes is the transition to Zero Blade Play (ZBP) technology, which eliminates side-to-side movement in the blade, improving deployment consistency and lock-up security.

Another major innovation is the Dual Fuel Drive Train, replacing the original single-spring mechanism. This system utilizes two springs, enhancing the force behind deployment while maintaining smooth operation. The new drivetrain optimizes propulsion and longevity, ensuring Microtech’s signature rapid deployment remains unparalleled. The inclusion of this technology has allowed Microtech to fine-tune the action of the Ultratech, making it even more efficient and powerful than its predecessors.

Microtech has also introduced the Crud Kutter system, inspired by firearm mechanics, to prevent debris buildup within the firing mechanism. This feature helps maintain a smooth blade deployment, even when pocket lint or dirt is present. With this addition, the Ultratech has become more reliable than ever, even in adverse conditions.

Microtech’s commitment to high-quality materials has been a defining feature of the Ultratech series. Recent models have adopted M390MK, a proprietary steel developed in collaboration with Bohler, known for its extreme durability and edge retention. While early Ultratech models featured 6061-T6 aluminum handles, some of the latest iterations incorporate 7075-T6 aluminum, which provides an even higher strength-to-weight ratio. These advancements ensure that the Ultratech remains one of the most durable OTF knives on the market.

UTX-85

Microtech UTX-85

Released in 2015, the UTX-85 was designed as a scaled-down version of the Ultratech, measuring 85% of the original size. It was intended to bridge the gap between the full-sized Ultratech and the ultra-compact UTX-70, offering a more versatile size for everyday carry. The UTX-85 has undergone two generations and four major revisions, refining the internal mechanisms and improving overall ergonomics. Although the UTX-85 was discontinued, Microtech has announced its return in the summer of 2025, promising further advancements in materials and functionality. This reintroduction highlights the continued demand for this mid-sized model among Microtech fans.

UTX-70

Microtech UTX-70

Introduced in 2002, the UTX-70 is Microtech’s most compact OTF knife, designed for maximum concealability and effortless everyday carry. At 70% the size of the standard Ultratech, it became a favorite among users looking for a small yet highly functional automatic knife. Over three generations and eight major revisions, the UTX-70 has been continually refined with improved screws, a redesigned leg mount, and enhanced body styling, all contributing to greater reliability and usability. Despite its size, it maintains the same precision and quality expected from Microtech, making it a top choice for those who demand performance in a discreet package.

The Microtech Ultratech series has continuously evolved, setting the standard for OTF automatic knives with each new generation. From its early days as a groundbreaking design to the latest innovations in materials and mechanics, the Ultratech remains a leader in performance, reliability, and craftsmanship. With the return of the UTX-85 and continued advancements, Microtech continues to refine and push the limits of what an OTF knife can be. Whether full-sized or compact, the Ultratech stands as a benchmark of precision engineering, proving why it remains one of the most trusted and sought-after OTF knives on the market.

Written By

Drew Clifton

Drew Clifton

Drew is the lead writer for SMKW's Knives 101, crafting informative and engaging content for the world’s largest knife store. With expertise in knife history, design, and functionality, Drew delivers articles and product descriptions that educate and inspire knife enthusiasts at all levels.

Expert Reviewed

T.C. Barnette

T.C. Barnette

T.C. Barnette is a dynamic media personality and the esteemed spokesperson for SMKW (Smoky Mountain Knife Works), where his passion for knives intersects with his captivating on-screen presence. With a magnetic charisma and deep expertise in cutlery, T.C. has become a beloved figure in the knife community.

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