Antimicrobial Raw Brass Cap-O-Matic Space Pen

The Classic Cap-O-Matic Space Pen in Raw Brass

For generations, the Cap-O-Matic has been the workhorse of the Fisher Space Pen lineup. Built for people who depend on their pen every day, it combines simple, one-handed activation with Fisher's proven pressurized ink technology.

The M4RAW Cap-O-Matic Space Pen’s classic design is finished in raw brass, bringing a warm, natural character to a trusted everyday writing instrument.

Crafted from a copper-rich brass alloy with an uncoated, unfinished surface, the M4RAW is designed to change with use. Over time, the brass develops a unique patina shaped by how you carry, use, and handle your pen. No two M4RAW pens will ever look exactly the same.

Made to Be Carried. Built to Wear In.

The M4RAW is designed for everyday use. Its durable construction and one-handed activation make it a natural choice for the job site, the field, the office, or wherever dependable writing matters.

Press the flat end of the non-removable cap to extend or retract the writing point. Simple, practical, and ready when you are.

Legendary Fisher Performance

Inside the raw brass exterior is Fisher's proven pressurized ink technology. The M4RAW writes upside down, underwater, through grease, and in extreme temperatures from -30°F to +250°F. It can write on almost any surface and lasts up to three times longer than the average ballpoint pen.

Built for people who expect their tools to work, the M4RAW delivers legendary Fisher performance in a proven everyday design.

Natural Antimicrobial Properties

With a composition of 85% copper, the brass alloy carries natural antimicrobial qualities. The exposed surface on the M4RAW may help reduce the growth of certain bacteria and microorganisms over time, adding another layer of practicality to your everyday carry.

It's another reason the M4RAW makes a practical everyday carry. Designed for work, the field, and wherever dependable writing matters, its raw brass finish continues to evolve with every use.

Built by Fisher. Finished by You.

Complete your Raw Brass collection with the Raw Brass Original Astronaut Space Pen and Raw Brass Bullet Space Pen, and experience the evolving character of raw brass across three Fisher classics.

What to Expect from Raw Brass: The M4Raw features a raw, unfinished brass casing designed to change with use. Over time, each pen will develop a unique patina influenced by its environment, your body's chemistry, and the way you handle it. Fingerprints, scratches, polish marks, and changes in color are natural characteristics of raw brass. No two pens will develop exactly the same finish, making your M4RAW uniquely yours. If you prefer its original look, the brass can always be polished to restore its finish.

Please note: Engraving on raw brass will appear subtle due to the natural finish of the material.

A portion of the proceeds from the sale of each M4RAW will be donated to support Feeding America.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.