Marble Arms .500'' Fiber Optic Glow 50-W Front Sight Steel Green

The Marble Arms .500" Fiber Optic Glow 50-W front sight in steel green brings a reliable, visible aiming solution to your rifle. Built from solid steel with a traditional blued finish, this ramp-mounted front sight pairs classic gunsmithing with modern fiber optic technology—giving you a bright, fast-acquiring sight picture in a wide range of light conditions. Whether you're setting up a hunting rifle, target gun, or working firearm, a quality front sight is foundational to accuracy and pointing reliability.

The green fiber optic rod (.060" diameter) captures and channels ambient light to create a glowing sight element that stands out against most backgrounds without batteries or tritium. The sight blade is gracefully contoured with a forward-sloping profile—a time-tested geometry that aids quick target acquisition and reduces shadowing issues you might encounter with blunt-topped designs. The .340-wide ramp base is designed for standard ramp-mounted installation, fitting rifles equipped with classic ramp bases.

Marble Arms has been making iron sights and sight components for generations, and this front sight reflects that heritage: simple, durable, and effective. Steel construction means it'll hold zero through field use and cleaning cycles, and the blued finish resists corrosion while blending seamlessly with traditional rifle aesthetics. For hunters, benchrest shooters, or anyone who values a fast, reliable front sight without electronics, the Marble Arms fiber optic glow sight is a proven choice.

Key Features

• Green fiber optic glow rod for bright, ambient-light-powered visibility
• Steel construction with blued finish for durability and classic appearance
• Gracefully contoured, sloping blade profile for quick target acquisition
• Ramp-mounted base (.340" wide) for standard rifle installations
• No batteries or tritium required

Specifications

Frequently Asked Questions

What rifles does this front sight fit?

The Marble Arms .500" front sight is designed for ramp-mounted installation. It fits rifles equipped with standard ramp bases. Check your rifle's sight mounting system before purchasing to confirm compatibility.

Does the fiber optic glow sight need batteries?

No. The green fiber optic rod captures and channels ambient light naturally—there are no batteries, electronics, or tritium inserts to maintain or replace. It glows brighter in good light and remains visible in dim conditions.

What's the difference between this sight and a traditional steel blade?

The fiber optic glow rod (.060" diameter green element) is far more visible than a plain steel blade, especially in variable light. The sloping, contoured blade geometry also aids faster target acquisition compared to blunt designs, while the steel construction and blued finish deliver the same durability and classic look.

Is this sight compatible with a scope or red dot?

This is a front iron sight designed for standalone use or as a backup sight on rifles with optics. Always verify that your specific rifle's sight mounting system can accommodate this ramp-mounted design alongside any other optics or sight hardware you plan to use.