Out of stock
Marble Arms .312'' Fiber Optic Glow 31-Mr Front Sight Steel Orange
$20.18
The Marble Arms .312" Fiber Optic Glow front sight in orange is a classic steel front sight designed for rifles that demand reliable target acquisition in variable lighting. Built with a gracefully contoured blade that slopes toward the front, this sight combines traditional gunsmithing with modern fiber optic technology. The orange glow rod catches ambient light and makes quick sight picture pickup effortless whether you're hunting in low-light conditions or shooting on a bright range. Steel construction with blued finish means this sight will wear well on your rifle and maintain its appearance over years of use.
Marble Arms sights have been a go-to choice for hunters and shooters who want dependable iron sights without complexity. The .312" fiber optic rod is a proven diameter that delivers visible brightness without excessive bulk, and the orange color contrasts naturally with most targets and game. If you're building a hunting rifle, upgrading an older gun, or simply preferring iron sights over optics, this front sight gives you a rugged, functional aiming point that doesn't require batteries or alignment with external systems.
The ramp-mounted configuration (with a .340" wide base) fits rifles with front sight ramps, making installation straightforward on many popular platforms. The blade's tapered design and steel durability mean this sight will handle recoil and field use without loosening or shifting once properly installed.
Key Features
- Orange fiber optic glow rod (.060" diameter) for low-light visibility
- Steel construction with blued finish for durability and appearance
- Gracefully contoured blade with forward slope for clean sight picture
- Ramp-mounted design with .340" wide base
- No batteries or electronics required
Specifications
| Fiber Optic Rod Diameter | .060" |
| Fiber Optic Color | Orange |
| Material | Steel |
| Finish | Blued |
| Mount Type | Ramp-mounted |
| Base Width | .340" |
| Nominal Sight Aperture | .312" |
Frequently Asked Questions
Will this front sight fit my rifle?
This is a ramp-mounted sight with a .340" wide base, designed for rifles with front sight ramps. If your rifle has a ramp-style base forward of the muzzle, this sight is compatible. Rifles with barrel-mounted (dovetail) receivers require a different mounting width, so confirm your rifle's sight base style before ordering.
How bright is the orange glow rod in dim light?
The .060" orange fiber optic rod collects and transmits ambient light to create a visible glow that improves sight picture in low-light hunting conditions and overcast ranges. Brightness depends on available light; in darkness without ambient light, the rod will not glow—iron sights require some illumination to be visible.
What tools or gunsmithing do I need to install this sight?
Installation specifics depend on your rifle's current front sight setup and barrel design. We recommend consulting your rifle's manual or having a qualified gunsmith install the sight to ensure proper alignment and secure mounting.
Is this sight alone enough for shooting, or do I need a rear sight too?
A functional iron sight setup requires both a front and rear sight. This product is the front sight only; you'll also need a compatible rear sight to establish a complete sight picture and aiming plane.
