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

The Marble Arms .500'' Fiber Optic Glow front sight in orange brings a rugged, visible aiming point to rifles equipped with ramp bases. Built from steel and finished in a classic blue, this front sight pairs traditional manufacturing quality with modern fiber optic technology—giving you a bright, glowing sight picture in low light and overcast conditions without batteries or electronics. The gracefully contoured blade slopes toward the front, reducing glare and presenting a clean profile on your rifle.

This sight is purpose-built for hunters and shooters who want reliable, no-fuss aiming on lever-actions, vintage rifles, and other firearms with standard ramp mounts. The orange fiber optic rod (.060" diameter) collects ambient light and converts it into a glowing aiming reference that stands out in dim timber or dawn and dusk shooting. Unlike traditional metal sights that can disappear in shadow, the glow front sight keeps your aim visible when it matters most.

Installation is straightforward on any rifle with a .340 wide ramp base. The sight is made to last—steel construction and proven Marble Arms engineering mean you're buying a front sight that'll outlast trends and abuse. Whether you're running open sights on a classic hunting rifle or building a backup sight system on a modern gun, this fiber optic front sight delivers the visibility and durability that working rifles demand.

Key Features

• Steel construction with blue finish for durability and classic appearance
• Orange fiber optic rod (.060" diameter) glows in low light without batteries
• Gracefully contoured blade design reduces glare
• Designed for rifles with ramp mounts (.340 wide base)
• Reliable open sight option for hunting and field use

Specifications

Frequently Asked Questions

What rifles is this front sight compatible with?

This Marble Arms fiber optic front sight is designed for rifles with ramp mounts and a .340 wide base. It's commonly used on lever-action rifles, vintage rifles, and other firearms equipped with standard ramp mounting systems. Verify your rifle's ramp mount width before purchasing.

Does the orange glow sight need batteries or external light?

No. The fiber optic rod collects ambient light from the environment—sunlight, overcast sky, or even weak artificial light—and converts it into a visible glow without batteries or electronics. It works passively, which means it's always ready and requires no maintenance or power source.

How bright is the orange glow in low light?

Fiber optic glow sights are most effective in dim or overcast conditions and during dawn and dusk hunting. In complete darkness, the glow will not be visible. The brighter the ambient light available, the brighter the glow will appear at your sight picture.

What's included with this sight?

You receive the Marble Arms .500'' fiber optic glow front sight itself. Installation on your rifle's ramp base will require basic gunsmithing tools and knowledge, or professional installation by a qualified gunsmith.