Overview

The Microtech HALO IV S/E Marfione Select Stonewash is a hand-finished single-action OTF executed to Microtech’s most demanding standards. Precision-machined from premium materials and finished in stonewash on both the blade and double vapor blast stainless hardware, the HALO IV deploys with unmistakable authority — clean, fast, and flawlessly secure with a single press of the button. The Marfione Select designation marks examples curated and inspected to the highest possible specification.

True Single-Action OTF Mechanism

Unlike dual-action OTFs, the HALO IV maintains constant spring pressure on the blade throughout deployment, delivering a harder, more decisive firing event. Retraction is manual, giving the operator deliberate control over blade engagement and an unmistakable mechanical character that has defined the HALO platform for decades.

Marfione Select Curation

Marfione Select knives are personally vetted at the factory and finished to a higher tolerance than standard production examples. The result is an OTF tuned with the precision of a custom piece while preserving the durability of a Microtech production knife.

Hardcoat Anodized Chassis & Stonewash Blade

The chassis is built from anodized aircraft-grade alloy with a deep, hard finish that resists wear and corrosion. The stonewashed single-edge blade and double vapor blast stainless hardware create a cohesive, modern-tactical aesthetic that wears in beautifully.

Premium Components

• Single-action out-the-front automatic platform
• Stonewash-finished single-edge blade
• Hardcoat anodized aircraft-alloy handle
• Double vapor blast stainless hardware
• Aggressive spine jimping for thumb purchase
• Reversible pocket clip
• Marfione Select designation, made in the USA

Specifications