Marble Arms .450'' Fiber Optic Glow 45-Mr Front Sight Steel Orange

The Marble Arms .450'' Fiber Optic Glow 45-Mr Front Sight in Steel Orange is a ramp-mounted front sight built for shooters who want a bright, fast-acquiring aiming point on their rifle. Fiber optic front sights have become the go-to choice for hunters and sport shooters because they gather ambient light and glow without batteries—orange is a classic choice that works well in most lighting conditions and contrasts naturally against typical hunting backgrounds. This Marble Arms sight is precision-manufactured steel with a gracefully contoured blade that slopes toward the front, giving it a refined profile that complements the lines of a quality rifle.

The fiber optic element uses a .060" diameter optic rod that collects light efficiently, so you get a vivid sight picture in open sunlight or overcast conditions. The base is .340 wide and designed for ramp mounting, which is the standard configuration on many rifle platforms. Marble Arms has finished the steel with a traditional blue that resists corrosion and blends aesthetically with blued or modern rifle receivers alike.

If you're upgrading an older rifle sight or looking for a bright, reliable front sight on a new build, a fiber optic glow sight eliminates the frustration of dim, hard-to-see blades. Unlike tritium night sights, these require no special licensing and work instantly in daylight—ideal for hunting where you're taking shots in variable outdoor light.

Key Features

• Orange fiber optic glow element for fast target acquisition
• Precision steel construction with blued finish
• .060" diameter optic rod for bright light gathering
• Gracefully contoured blade with forward slope
• Ramp-mounted base (.340 wide) for standard rifle installation
• No battery or special license required

Specifications

Frequently Asked Questions

What rifles does this front sight fit?

This sight is ramp-mounted with a .340" wide base, which is the standard configuration for rifles with open sight ramps. Verify your rifle accepts ramp-mounted front sights before purchase. It is not designed for Picatinny rail mounts or rifles without ramp bases.

How bright is the orange fiber optic in low light?

Fiber optic sights gather available ambient light and glow brightest in daylight and overcast conditions. They do not contain tritium or glow independently in darkness. For low-light or night shooting, a night sight with self-luminous tritium is a better choice.

Do I need batteries or special tools to install this sight?

No. Fiber optic sights require no batteries, electronics, or licenses. Installation is mechanical—you'll need a screwdriver and possibly a gunsmith depending on your rifle's ramp configuration.

Can I use this with the same rear sight I already have?

Yes, provided your rear sight is compatible with ramp-mounted front sights. This front sight works with open (iron) rear sights and other ramp-mounted rear sight systems. If your rear sight is Picatinny-mounted or designed for a soldered-on front blade, they may not align properly.