The Ultratech® Gen III vs Gen IV

What’s the Difference?

If you’re an enthusiast searching for the definitive Microtech Ultratech review or simply want to know the difference between the Microtech Ultratech Generation 3 and Generation 4, you’re in the right place. Microtech Knives leads the way in OTF (out-the-front) knife innovation, and the Ultratech series remains a top choice in the EDC community for 2025. This guide breaks down what sets the Ultratech Gen 3 and Gen 4 apart so you can make the best choice for your EDC or collection.

Key Features of The Ultratech® Gen III

The Generation 3 Ultratech stands out for its advanced Zero Blade Play (ZBP) system—a breakthrough that nearly eliminates all blade movement when deployed, making it the benchmark for secure lockup among automatic knives. This premium model features a high-grade Böhler M390MK blade, a robust 6061-T6 aircraft-grade aluminum handle, and precision Torx screws for enhanced serviceability. Microtech’s innovative Dual-Fuel Drive Train™ ensures consistently smooth deployment, while the Crud Kutter™ milling beneath the thumb slide actively channels away debris for long-term reliability. Users and collectors will also appreciate the upgraded gimping, slightly wider handle and blade, integrated tungsten carbide glass breaker, and left-handed compatibility thanks to a reversible machined pocket clip.

• Zero Blade Play (ZBP) for industry-leading safety and performance

• Upgraded materials and internal mechanics

• Premium price point due to the ZBP innovation

• Excellent for collectors and Double-Action OTF knife aficionados
  
  

What’s New in The Ultratech® Gen IV?

Generation 4 of the Microtech Ultratech introduces an option for users who want all the legendary performance and looks—at a better price. The most significant change in Gen 4 OTF knives is the removal of ZBP, resulting in minor blade movement that’s virtually unnoticeable for most users. Gen 4 models deliver the same cutting-edge build quality, hardware, and action, but make the platform accessible to more enthusiasts with their $299 base price.

• No Zero Blade Play—slight blade movement is possible, but the action remains smooth and reliable

• Lower price, broader color palette, and the same iconic design

• “IV” Roman numeral marking on the blade and box for clear identification
  
  

Microtech Ultratech® Gen III vs Gen IV: OTF Knife Comparison

Choosing between Gen 3 and Gen 4 depends on your priorities and needs. If total blade stability is crucial—and you don’t mind paying more—the Gen 3 ZBP remains the gold standard. For most EDC users and anyone wanting to experience Microtech’s best-selling OTF knife at a lower price, the Gen 4 Ultratech is a no-compromise choice that retains all the core qualities collectors absolutely love.

Is the Gen III or Gen IV Ultratech® Right for You?

If you’re building a Microtech knives collection or want the best OTF on the market in terms of locking tightness, the Gen 3 ZBP Ultratech is a must-have. If smooth action, precision build, and a smart price are your top priorities, Gen 4 is the new best choice for 2025 going into 2026.

For more in-depth Microtech Ultratech insights continue exploring our social channels—or shop the latest models directly on our website at microtechknives.com