Marble Arms Rifle Uni-Ramp Front Sight .405'' Fiber Optic Orange
$20.99
The Marble Arms Rifle Uni-Ramp Front Sight with .405" fiber optic orange rod is a straightforward, reliable upgrade for hunters and shooters who want to brighten their sight picture without complexity. This one-piece sight body houses a high-visibility fiber optic rod—¾ inch long with a .050" outside diameter—that gathers ambient light to create a glowing orange aiming point even in low-light hunting conditions. If you're running a rifle, shotgun, or muzzleloader with a screw-mounted front sight, this is a drop-in replacement that installs with a single screw for quick, field-proven swaps.
Marble Arms engineered this sight to work hard and look right. The polished blue finish blends naturally with most barrels while requiring minimal maintenance, and the one-piece construction keeps things simple—no fussy components to fidget with. Available in two blade heights and two barrel contours, the Uni-Ramp adapts to the geometry of most common firearm platforms, so you're likely to find a fit whether you're hunting whitetail with a rifle or running an heirloom shotgun.
Fiber optic front sights make sense for hunters who rely on natural light and need to pick up their aiming point in timber or overcast conditions. The orange rod cuts through shade and gray skies better than traditional metallic sights, while remaining visible enough in bright sunlight without washing out. This is a no-battery, no-electronics solution—it works as long as there's available light, making it a practical choice for the field.
Key Features
- Fiber optic orange rod—¾" long, .050" diameter—for low-light visibility
- One-piece sight body for durability and straightforward assembly
- Single screw mounting for quick installation and replacement on compatible rifles, shotguns, and muzzleloaders
- Polished blue finish blends with barrel and resists corrosion
- Available in two blade heights and two barrel contours to fit standard firearm applications
- No batteries or electronics required
Specifications
| Brand | Marble Arms |
| Product Type | Front Rifle Sight |
| Fiber Optic Rod Length | ¾ inch |
| Fiber Optic Rod Outside Diameter | .050 inch |
| Rod Color | Orange |
| Sight Body Construction | One-piece |
| Mounting Style | Single screw |
| Finish | Polished blue |
| Compatible Firearms | Rifles, shotguns, muzzleloaders with screw-held front sights |
Frequently Asked Questions
What firearms will this sight fit?
The Marble Arms Uni-Ramp front sight is designed for rifles, shotguns, and muzzleloaders that use screw-mounted front sights. It's available in two blade heights and two barrel contours to accommodate the geometry of most common applications, but you should verify your firearm's sight mounting and barrel contour before ordering to ensure compatibility.
Does the fiber optic rod require batteries or special maintenance?
No. The fiber optic rod gathers ambient light naturally—there are no batteries, electronics, or moving parts to maintain. It works in any light condition where your eye can see the sight picture, and the polished blue finish resists corrosion with routine care.
How does a fiber optic sight compare to a standard metallic front sight?
Fiber optic sights gather and concentrate light in the rod, creating a glowing aiming point that's easier to pick up in dim, shaded, or overcast hunting conditions. The orange rod provides higher contrast and visibility than traditional steel sights while remaining usable in bright sunlight. For hunters working timber or low-light scenarios, the visibility advantage is genuine.
What's the installation process?
The Marble Arms Uni-Ramp installs with a single screw on compatible firearms with screw-held front sights. Installation time is minimal, and the single-screw design makes field replacement or adjustment straightforward.
