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Microtech Scarab II
The Microtech Scarab II is the biggest statement in the catalog: the largest double-action OTF Microtech makes, running about 9.7 inches deployed with a blade just shy of 4 inches that is also the widest in the lineup. Pushing nearly 6 ounces of contoured 6061-T6 aluminum, it was conceived as a blend of everything the company had learned across its OTF families, folded into one oversized platform.
If the Ultratech is the everyday face of the Microtech lineup, the Scarab II is the one you build the collection toward.
Scarab II Gen III
Gen III is where the platform earned its current reputation. A double-spring drive system fires the blade with enough force that Microtech demonstrates it working underwater, and the milled crud cutter grooves in the thumb slide cutout break up lint and grit before they can slow the action. Rear porting in the frame gives debris somewhere to go, 3M textured inserts keep the chamfered handle planted in wet or gloved hands, and a glass breaker, lanyard hole, and reversible steel clip wearing the engraved scarab finish it out. It is the most over-engineered mechanism in an already over-engineered catalog.
Scarab II Blade Styles in M390MK
Every Gen III blade runs Bohler M390MK, the M390 variant Bohler produces exclusively for Microtech, and the wide, thick blade stock makes the most of it; see how it stacks up in our comparison of every major knife steel. Configurations span the S/E drop point, T/E tanto, D/E dagger, and D/E-S, in plain, partially serrated, and fully serrated edges. Beyond tactical black, the catalog stretches through OD green, red, turquoise, and natural clear into Executive builds and Signature Series runs like Outbreak, weathered metal, and burnt bronze and moss green Cerakote.
Scarab II vs Combat Troodon
The two heavyweights split hairs at the top of the range. The Combat Troodon is the proven duty knife with the deeper bench of signature grinds, while the Scarab II runs slightly longer with a wider blade and the burliest drive system Microtech builds. Between them sits maybe half an inch and a philosophical question about how much knife fires out the front of your fist. Among full-size OTF knives, nothing else in America is having this argument.