Marttiini B440 Linerlock Folding Knife Black G-10 Handle 3.15in Black Blade MN970110

The Marttiini B440 Linerlock Folding Knife brings modern Finnish design and dependable everyday performance together in a compact, no-nonsense package. Built for users who want a functional EDC folder with clean lines and durable materials, this knife reflects Marttiini’s long-standing reputation for practical craftsmanship and field-ready utility. It’s made in Finland, carrying forward the brand’s heritage while embracing a more contemporary folding knife platform.

Measuring 4.13 inches closed, the B440 offers a slim, pocket-friendly profile that carries comfortably without unnecessary bulk. The 3.13-inch black finish stainless steel blade is chromium plated for added resistance and a low-profile tactical appearance. The blade shape is built for general utility tasks, making it a reliable option for cutting, slicing, and everyday work. It opens smoothly using the integrated thumb stud, allowing quick one-handed deployment when needed.

At the core of the design is a sturdy liner lock mechanism that keeps the blade securely engaged during use. This simple, proven locking system gives confidence in handling while maintaining easy operation and straightforward maintenance. The balance of the knife feels intentional and controlled, giving it a solid presence without overcomplicating the design.

The handle is constructed from black G10, a fiber-reinforced composite known for its strength, stability, and resistance to moisture and temperature changes. The textured surface provides a secure grip in a variety of conditions, while the internal structure of the G10 adds long-term durability without adding unnecessary weight. Its clean, matte finish complements the dark blade for a cohesive, understated look that fits both outdoor and urban carry environments.

A low-profile belt clip allows for convenient pocket carry and quick access, keeping the knife positioned for practical everyday use. Whether clipped to a pocket, pack, or gear bag, the B440 stays ready for routine cutting tasks without drawing attention. Its streamlined design avoids excess embellishment, focusing instead on dependable function and straightforward usability.

Marttiini designed this folder to bridge traditional knife-making heritage with modern EDC expectations. It’s lightweight, durable, and purpose-driven, making it a strong choice for anyone who values reliability in a compact folding knife.

Finnish-made performance in a sleek black G10 folder built for everyday carry, available at SMKW.