The Back Door: Ultratech Gen IV D/E OTF Automatic Knife – Blue Aluminum Handle, 3.5″ Stonewash Bohler M390MK Dagger Blade (MCT1122410BL) (Return)

Ultratech Gen IV – The Next Evolution in OTF Innovation

The Ultratech Gen IV represents a thoughtful step forward in Microtech’s iconic line of OTFs. Unlike previous generations, Gen IV ditches the Zero Blade Play (ZBP) system entirely—returning to a more traditional precision fit and finish while leaning on feedback from the Microtech community. 

This D/E version features a 3.5″ Bohler M390MK double-edge dagger blade in a stonewash finish, paired with a bold blue anodized aluminum handle. Deployment is fully automatic, and the design includes a glass breaker and pocket clip for daily versatility.

Note from Lone Star Knife & Supply

This is where Microtech has dialed back a few “bells and whistles” to focus on performance you feel. The action feels smooth, solid, and familiar—but updated. The blue handle with stonewash blade gives it visual pop while staying grounded in usable design.

Standout Features

• Bohler M390MK Blade (3.5″ Double-Edge, Stonewash Finish) – High-end stainless with strength, edge retention, and corrosion resistance

• Blue Anodized Aluminum Handle – Lightweight and robust with Microtech’s premium milling

• Automatic Opening / Double-Action – Deploys and retracts via thumb slide

• Built-in Features – Includes glass breaker, lanyard hole, and pocket clip

• Next-Gen Design – Gen IV removes ZBP and focuses on refined mechanics and performance

• Made in the USA – Full Microtech build quality

Specifications

• Closed Length: 5.00″ (12.7 cm)

• Blade Length: 3.5″ (8.89 cm)

• Blade Steel: Bohler M390MK stainless

• Blade Style: Dagger (Double-Edge)

• Blade Finish: Stonewash

• Handle Material: Anodized Blue Aluminum

• Lock / Mechanism: Double-Action OTF Automatic

• Extras: Glass breaker, pocket clip, lanyard hole

• Country of Origin: USA

Why You’ll Want It

The Gen IV Ultratech D/E is a refined clash of practicality and heritage. By removing ZBP and polishing internals, Microtech leans on what they do best: crisp, dependable automatic action paired with premium materials. This D/E version stands bold and clean in your hand. Your customers who loved past Ultratechs will feel right at home—and new eyes will see a thoughtful evolution.