The Microtech UTX-85 is the Ultratech scaled to 85 percent, and the math works out to one of the most pocketable serious OTF knives you can buy: 7.65 inches overall, a 3.10-inch blade, and just 3.1 ounces of anodized 6061-T6 aluminum. The dual-action thumb slide fires and retracts the blade with the same authority as its big brother, and jimping around the slide keeps your thumb planted through both strokes.
The scaled-down frame also means a slightly lighter pull on the switch, which has made the UTX-85 a favorite for smaller hands and for anyone who found the full-size action a touch stiff. Like everything else in the Microtech catalog, it is precision machined in the USA.
Current production is Gen IV, identified by the Roman numeral marked on the blade. The generation brings a contoured chassis with a smooth, flat finish, a revised drive system that runs slicker than anything the platform has seen before, and a firing switch that rides on a milled platform designed to break up pocket lint before it can gum the action. It adds up to a small OTF that deploys with the crack and confidence of the full-size knives, then drops back into the pocket and disappears.
Blades run Bohler M390MK, the tightened-spec version of M390 that Microtech reserves for its premium production, which buys serious edge retention and corrosion resistance in a knife this size. You can see exactly where that steel lands in our comparison of every major knife steel. Configurations cover single edge, double-edge dagger, and tanto profiles in plain, partially serrated, and fully serrated edges, with the Spartan grind and Signature Series runs like the 250th Anniversary flag editions rotating through alongside the standard black, OD green, tan, and blue chassis colors.
The sizing ladder is simple. The full-size Ultratech carries a 3.5-inch blade for maximum reach and presence, the UTX-85 gives up four tenths of an inch to ride lighter and lower in the pocket, and the UTX-70 shrinks the same design to 70 percent for the true minimalists. For a lot of carriers, the 85 is the Goldilocks answer: enough blade for real work, little enough knife that it goes everywhere. Among out-the-front knives, it might be the easiest recommendation in the class.