Microtech 121-1BL Ultratech AUTO OTF Black Blade, Blue Aluminum Handle
The Microtech 121-1BL Ultratech AUTO OTF sets the benchmark for out-the-front (OTF) automatic knives. As Microtech’s original dual-action OTF model, the Ultratech has been the foundation of the entire OTF lineup, consistently evolving with improved efficiency and reliability.
Featuring a black drop point blade and a lightweight blue anodized 6061-T6 aluminum handle, this knife delivers exceptional cutting performance, durability, and ergonomic comfort. The dual-action auto fire/retract mechanism ensures smooth and rapid deployment, making it a versatile and dependable tool for everyday carry and tactical applications.
The Ultratech’s spring remains at rest when not deployed, preventing fatigue and ensuring consistent, powerful blade action every time. Its slim profile, lightweight construction, and scalpel-sharp blade make it a truly one-of-a-kind knife, built to handle any challenge.
Key Features
- Black drop point blade for precise cutting performance
- Blue anodized 6061-T6 aluminum handle for lightweight durability
- Dual-action OTF mechanism for quick deployment and retraction
- Ergonomic design for a secure and comfortable grip
- Made in the USA with premium materials and craftsmanship
Specifications
- Blade Length: 3.46″
- Blade Thickness: 0.125″
- Blade Style: Drop Point, Black Finish, Plain Edge
- Handle Material: 6061-T6 Aluminum, Blue Mil-Spec Hard Coat Anodized
- Handle Thickness: 0.640″
- Length Closed: 4.84″
- Length Open: 8.30″
- Pocket Clip Material: 301 Stainless Full Hard
- Standard Top: 6061-T6 Aluminum Alloy
- Trigger: 303 Stainless
- Sheath: Not Included
- Country of Origin: USA
About Microtech
Founded in 1994 by Anthony and Susan Marfione, Microtech Knives has built a reputation for producing high-quality, precision-crafted knives. Every Microtech knife undergoes rigorous hand-sharpening and testing, ensuring exceptional reliability and performance.

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