Marble Arms .343'' Barrel Mounted 3/32'' 34-W Front Sight Brass Gold
The Marble Arms .343'' barrel-mounted front sight in brass gold is a classic iron sight option for rifles where the front sight dovetail is cut directly into the barrel. This 34-W front sight features a 3/32'' brass gold bead paired with precision steel construction and traditional bluing that complements the profile of working rifles. Built for shooters who rely on iron sights for hunting, sport shooting, or backup aiming when scopes aren't the answer.
Marble Arms sights are known for thoughtful design—the blade slopes gracefully toward the front, reducing glare and improving sight picture in field conditions. The rounded base sides on this barrel-mounted model are engineered to fit dovetail cuts machined directly into the barrel, making installation straightforward on compatible rifles. The 17/32'' (13.5mm) wide base on W-profile sights provides solid contact and repeatable zero.
The brass gold bead is visible in low light and delivers a warm, high-contrast aiming point that many hunters and marksmen prefer over white or ivory options. If you're building or restoring a rifle with open sights, or adding a dedicated iron sight backup to a scoped rifle, this Marble Arms front sight delivers the accuracy and durability you'd expect from a maker with over a century of sight-making heritage.
Key Features
- Barrel-mounted design for dovetail cuts in the barrel
- 3/32'' brass gold bead for high-contrast aiming
- Precision steel construction with traditional bluing
- 17/32'' wide base (W profile)
- Gracefully contoured blade design
Specifications
| Brand | Marble Arms |
| Sight Type | Barrel-Mounted Front Sight |
| Mount Style | Dovetail (barrel cut) |
| Bead Material | Brass Gold |
| Bead Diameter | 3/32'' (2.4mm) |
| Base Width | 17/32'' (13.5mm) — W profile |
| Barrel Diameter Compatibility | .343'' |
| Construction | Steel, blued |
Frequently Asked Questions
What rifles is this front sight compatible with?
This barrel-mounted sight is designed for rifles with a dovetail cut machined directly into the barrel. Verify that your rifle's barrel has a compatible dovetail slot before purchasing. The .343'' specification refers to the barrel diameter; ensure your rifle's barrel matches this dimension or is within the mounting tolerance of your specific model.
Can I use this as a backup sight with a scope?
Yes. Many shooters mount iron sights alongside scoped rifles for a reliable secondary aiming system if the scope fails or if close-range shooting doesn't require magnification. This front sight pairs with a compatible rear sight to form a complete open-sight picture.
What is the difference between the brass gold bead and other bead options?
The brass gold bead offers a warm, high-contrast aiming point that performs well in dim light and woodland settings. Marble Arms also makes white (ivory) polymer bead options if you prefer a lighter-colored sight picture.
What does the "W" in "34-W" refer to?
The W indicates the sight profile and base width. W-profile sights have a 17/32'' (13.5mm) wide base, which is the industry standard for many barrel-mounted front sight applications.

