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Marble Arms has been making front sights since 1900, and this .500" contour model carries that heritage with a modern twist. The steel body gives you the durability of a traditional sight, while the orange fiber optic bead gathers light and glows, so your eye picks it up quickly in dim woods, at dawn, or against a shadowy target. It's a practical fix for anyone whose eyes aren't what they used to be, or who just wants a faster, brighter aiming point than a plain bead.
This is a barrel-mounted sight built for a 3/8" dovetail, with a width right around .531". The .500" figure is the overall height measured from the bottom of the dovetail to the top of the bead, which matters when you're matching front and rear sight heights to get your point of impact where you want it. The bead runs 3/32", a good middle-ground size that stays visible without covering up too much of the target. As with most dovetail sights, expect to do a little fitting during install since these often run a hair oversized on purpose for a tight, drift-to-zero fit.
Orange fiber optic tends to stand out well against green brush, brown timber, and low-contrast backgrounds, which is a big reason hunters gravitate toward it over green in the field. The rod pulls in ambient light and lights up the bead, giving you a crisp, glowing dot to center in your rear notch or peep. No batteries, nothing to switch on, it just works whenever there's light to gather.
The classic Marble contour isn't just for looks, though it does give a rifle that timeless traditional profile. The steel construction holds up to recoil and rough handling far better than plastic sights, and the design has earned its reputation with precision-minded hunters and target folks for well over a century. If you're refreshing a lever gun, a bolt rifle, or any barrel with a 3/8" dovetail, this is a dependable, no-nonsense choice.
It's designed for a barrel with a standard 3/8" dovetail cut, which covers a lot of lever guns, bolt rifles, and older sporting arms. Keep in mind the .500" measurement is the height from the bottom of the dovetail to the top of the bead, so you'll want to match that against your rear sight height for proper zero. Measuring your existing sight before ordering is the surest way to confirm the right fit.
These sights are often cut slightly oversized on the base so you can fit them for a tight, secure hold, so a small triangle or slim taper file and a brass punch or sight pusher are handy to have. Most folks find it takes just a few passes to get a snug fit, then the sight drifts left or right to align with the rear. If you're not comfortable fitting a dovetail sight, a gunsmith can handle the install quickly.
Orange fiber optic pops against green foliage, brown timber, and darker backgrounds, which is why a lot of hunters prefer it for field use. Green can be easier to see in bright open conditions, so it comes down to where and how you shoot. Both gather ambient light and glow without any batteries.
The sight body is solid steel, so it stands up to recoil and knocks around in the field far better than plastic-bodied sights. The fiber optic rod is protected within the bead housing to guard against snags and impacts. Marble Arms has been building rugged sights on this contour design since 1900, and they've earned a reputation for holding up.
| UPC | 871373002850 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 205035 |
| Color | ORANGE |
| Style | Fiber Optic |
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