GiantMouse Launches Its Speediest, Most Convenient EDC Knife Yet

The result of a partnership with Pro-Tech marks the brand’s first foray into a popular, if divisive, category of everyday carry.

Black folding knife with a stonewashed blade and geometric design on the handle, on a wooden surface next to brass bullet casings.

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By Hayley Helms

Published December 1, 2025

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Updated December 1, 2025

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GiantMouse is no stranger to producing high-end, detail-driven knives … in fact, the brand thrives on it. While its lineup of folders and fixed blades is comprehensive, until now, one category was noticeably absent: a fast, reliable automatic knife designed for everyday carry.

That changes now. Thanks to a design partnership with Pro-Tech, one of the most respected names in the automatic arena, GiantMouse is stepping into that new territory with confidence. The result is an automatic knife that feels destined for greatness.

Folding knife with black handle and stonewashed blade on a wooden surface next to a red and white striped cloth and brass bullet casings. — The milled titanium clip adds a touch of utility to this everyday automatic.

Precision, automated

GiantMouse’s unique aesthetic convergence of Scandinavian design and American craftsmanship has helped the brand make a name for itself in the sometimes homogenous landscape of EDC, and the new Ace Elmer is an eye-catching continuation of that union.

Black folding pocket knife with a gray metal clip on a wooden surface next to metal dog tags. — The black aluminum handle maintains a light weight and adds to the streamlined appeal of the Ace Elmer.

Designed with influence from the GiantMouse Clyde (and the Clyde’s bigger brother, the GMX,) the Ace Elmer fuses together that well-known form with Pro-Tech’s expertise in high-performance automatic knives.

As one of the defining names in switchblades, Pro-Tech is known for its focus on deployment, precision machining and exceptional build quality.

The result of this partnership is a nimble knife with clean geometry, fast action and meticulous craftsmanship that can be felt from end to end.

Black folding knife with a stonewashed blade on a wooden surface next to a belt of brass bullets. — The long, slender profile of the trailing point blade shape, matched with its 3.2 inches of CPM-Magnacut steel, makes the Ace Elmer ideal for everyday tasks.

The Ace Elmer’s capable CPM-Magnacut stonewash blade is a manageable 3.2 inches, with a blade steel hardness of around 62 HRC. The entire knife is 7.8 inches open, with a 4.57 inch handle.

That handle’s subtle engraved GiantMouse logo provides just a hint of grip, and pairs well with the push button-managed automatic pivot and reliable button lock mechanism. A milled titanium clip completes the quality-focused package.

Black folding knife with geometric circle and line design on handle, resting on a wooden surface. — The subtle GiantMouse logo engraved in the handle adds just the right amount of grip to operate the Ace Elmer.

The Ace Elmer is not a knife that demands attention, despite its highly lauded components and materials. This automatic thrives on subtlety, from its minimalistic design language to its purpose-inspired heritage.

Availability and pricing

The Ace Elmer has been limited to 150 units, and is available on GiantMouse’s official website now for $365.

Editor’s Note: Automatic knives are among the most heavily regulated knives available. As such, they are not permitted to be carried everywhere. Before purchasing one, familiarize yourself with your local regulations to ensure you’re adhering to the law.

Folding knife with black handle and stainless steel blade marked "ACE CPM MagnaCut.

GiantMouse Ace Elmer – Black Mouse

$365 at Giantmouse

About the Author: Hayley Helms is an associate editor at Gear Patrol specializing in outdoor gear. Once upon a time, she wrote for Men’s Journal, Gearjunkie and Shape. Whether it’s testing a new rain shell or putting a pair of hiking boots through its paces, she leaves no stone unturned (however, she always Leaves No Trace).

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