Product Description

The Microtech Halo IV is the largest production OTF knife Microtech makes — a full-size, double-action out-the-front automatic with a 3.85" clip point blade and a 9.25" overall length that puts it in a category of one at this quality tier. The Marfione Select designation marks it as part of Microtech's premium tier: elevated fit, finish, and material selection beyond the standard production line.

The blade is Bohler M390MK, Microtech's in-house processed M390 variant hardened to an industry-leading range, delivering edge retention that far outlasts most production OTF steels. The stonewash finish suppresses surface glare and masks field wear without adding coating thickness. The clip point profile is Microtech's standard Halo geometry — a versatile workhorse profile on an otherwise uncompromising platform.

The handle is black hardcoat aluminum alloy — anodized for wear resistance with a matte tactical profile. At 4.42 oz and 5.40" closed, the Halo IV is not a pocket knife; it is a belt-carry OTF built for users who want the largest, most capable automatic Microtech offers.

• Blade: 3.85" clip point, Bohler M390MK, flat grind, stonewash finish, plain edge
• Handle: Black hardcoat aluminum alloy, 5.40" closed
• Deployment/Lock: Double-action OTF, push-button automatic, button lock
• Carry: 4.42 oz, tip-up right-hand clip

Ideal for OTF collectors building a complete Microtech Halo series set who want the Marfione Select tier. A strong choice for tactical users who want the largest production OTF available in a premium steel without going custom. Works well for buyers who carry other Microtech production OTFs and want a step up in both size and material specification.

Add the Microtech Marfione Select Halo IV OTF (1150-10MS1) to your cart today — an authorized Microtech product that ships same or next business day from Knifeworks in Columbia, Louisiana.