Product Description

The Ultratech EX-ZBP is Microtech's answer to a problem most double-action OTFs never solve: blade play. The proprietary Zero Stop mechanism wedges the blade against the chassis with a precision-tuned cone-shaped component, eliminating play in a design that's user-serviceable rather than a sealed black box — genuinely rare on a double-action platform, where both firing and retracting the blade multiply the tolerances that usually cause it. That blade is Böhler M390MK, Microtech's hardened designation for premium M390 powder steel, ground into a double-edged bayonet profile with a flat grind and bead blast stonewash finish. Gen III brings two more upgrades along for the ride: the Dual Fuel Drivetrain's double-spring system lightens the pull on the wide thumb slide, and machined Crud Cutter grooves under that slide cut friction and break down lint and grit before they can gum up the action. The black aluminum handle carries Torx hardware, an integrated low-profile glass breaker, and a reversible, tip-down titanium pocket clip with a silica carbide ball. ⚠️ This is an out-the-front automatic knife — OTFs are restricted or banned in some states and municipalities; verify your local and state laws before purchase or carry, and see akti.org for a state-by-state reference. ⚠️ This blade is also double-edged (dagger-style) — double-edged blades carry separate legal restrictions from automatics in many states, so check your local law on that specifically as well; akti.org covers this too.

• Böhler M390MK, double-edged bayonet profile, flat grind, bead blast stonewash finish — 3.50-inch blade holds elite edge retention through daily use
• Zero Stop internal mechanism eliminates blade play — a user-serviceable, precision-tuned cone wedge, rare on a double-action OTF platform
• Double-action OTF automatic via wide thumb slide, powered by the new Dual Fuel Drivetrain and Crud Cutter friction-reducing grooves for smoother, more reliable firing
• Black aluminum handle with Torx hardware and integrated low-profile glass breaker — reversible, tip-down titanium pocket clip with silica carbide ball for right- or left-hand carry

This is the Ultratech for buyers who've been burned by blade play on a double-action OTF before and want Microtech to have actually solved it, and for ambidextrous or left-handed carriers who'll appreciate the reversible clip and lanyard-hole base screw — provided you're in a state where OTF automatics and double-edged blades are both legal to own and carry. Add the Microtech Ultratech EX-ZBP Gen III (1120EX-10APS) to your cart today for a double-action OTF with genuinely zero blade play, backed by the authorized-dealer service and fast shipping Knifeworks is known for.