Microtech HALO IV

Single-action OTF automatic knife with M390MK steel blade and hardcoat anodized aluminum handle, known for fast deployment, precision, and premium Marfione Select build.

Last updated21 July 2026

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Weight116.3 g (4.10 oz)

PriceUS$709

Blade steelM390MK stainless steel

Lock typeButton lock (single-action)

Technical Specs

Specifications

CategoryAutomatic Knife

Blade length98 mm (3.86 in)

Overall length235 mm (9.25 in)

Closed length137 mm (5.39 in)

Blade thickness3 mm (0.12 in)

Handle materialHardcoat anodized aluminum alloy

FinishStonewashed or apocalyptic DLC depending on variant

Opening methodSingle-action out-the-front automatic

Clip typeTip-down titanium pocket clip

Carry Profile

Best for

▣EDC▣Collector-grade Usage▣Precision Cutting

Field Signals

Common praise

✓

Fast and reliable single-action deployment

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High-quality blade steel with excellent edge retention

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Robust Marfione Select craftsmanship

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Lightweight and ergonomic handle

✓

Integrated see-through spine for blade lock confirmation

Watchlist

Common complaints

⚠

Manual blade retraction requires two hands

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Higher price point reflecting premium nature

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