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Three Rivers Manufacturing (TRM) is a proudly American knife company known for producing high-performance, precision-built folding knives with a strong focus on quality, innovation, and everyday usability. Based in Massachusetts, TRM has built a loyal following in the EDC community by combining modern materials with thoughtful, user-driven design.

A Brief History

TRM’s roots go back decades in the precision manufacturing industry, originally operating as a machining and engineering company before entering the knife world. Leveraging their deep expertise in CNC machining and tight-tolerance production, TRM began crafting knives that quickly stood out for their consistency, fit and finish, and smooth action. Rather than mass-producing at scale, TRM has maintained a more controlled, small-batch approach—ensuring every knife meets their exacting standards.

Built for Everyday Carry

At its core, TRM designs knives for real-world use. Models like the Atom, Neutron 2, and Bulldog have become staples in the EDC community for their lightweight construction, slim profiles, and exceptional cutting performance. By using premium blade steels such as CPM MagnaCut and pairing them with high-quality handle materials like carbon fiber, G-10, and micarta, TRM strikes a balance between durability and everyday practicality.

Precision Meets Innovation

What sets TRM apart is their commitment to continuous improvement. Their knives often feature ambidextrous locking systems, modular scale options, and refined ergonomics that make them accessible to a wide range of users. Every detail—from blade geometry to hardware—is carefully engineered to deliver reliability and performance you can depend on daily.

American Craftsmanship

All TRM knives are made in the USA, reflecting the company’s dedication to domestic manufacturing and quality control. Each piece represents a blend of modern machining technology and hands-on craftsmanship, resulting in tools that are not only functional but built to last.


**At Heroic EDC, we’re proud to carry Three Rivers Manufacturing—a brand that embodies precision, performance, and purpose-built design for everyday carry enthusiasts who demand the best.

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About Us

We are a small, family-owned business. Consisting of just me, Jeremiah and my father Bill. We get help from my wife and kiddos as well, but it is mainly just us, father and son.

Our Mission

We obsess over the details and strive to deliver the best products at the best prices, every time.

Our Values

We're always on your side: keeping our loyal customers happy is our top priority and number one goal.

Medford Knife and Tool

Overbuilt - Precision - USA Made