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The Marble Arms 37-MR is a ramp-mounted front sight built for anyone tired of squinting at a dull or beat-up bead. It runs a 3/32" gold bead that catches light in the woods and against dark targets, so your eye lands on it quick when a shot opens up. At .375" tall with a .531" body, this one covers a lot of the classic lever guns and older sporters that came from the factory with a ramp base.
Marble Arms has been turning out sights since the early 1900s, and they're all steel and made in America. This ramp-style version slides into any front sight ramp cut with a 3/8" dovetail, which is the standard on a huge range of rifles from Winchester, Marlin, Remington, Savage and others. The gold bead reads well in low light and stands out against foliage, which is a big reason these are a go-to for hunters and folks running peep or receiver sights out back.
Like most quality dovetail sights, this one usually runs a hair oversized on purpose so you can file it down for a tight, no-wander fit. A few passes with a slim taper file on the dovetail base is typical, then it drifts in snug and stays put. Plenty of owners pair a Marble front bead like this with a rear peep to dial in elevation, especially when a rear sight has run out of downward adjustment and the front needs to come up.
If you're bringing an old rifle back to life or swapping a cracked or worn bead, the 37-MR is a solid, no-nonsense choice that looks right at home on vintage steel. Measure your existing sight height first so you land on the correct point of impact, and you'll be set.
The 37-MR slides into any front sight ramp cut for a 3/8" dovetail, which covers a wide range of classic and modern rifles from makers like Winchester, Marlin, Remington and Savage. Since it's a ramp-style sight, your rifle needs an existing ramp base rather than a bare barrel dovetail. Measure your current sight height before ordering so the point of impact lands where you want it.
Usually yes, and that's by design. These sights often run slightly oversized so you can file the dovetail base for a tight, secure fit. A few passes with a slim taper file typically gets it drifting in snug, and a gunsmith can handle it quickly if you'd rather not do it yourself.
The 3/32" gold bead reads well in low light and stands out sharply against foliage and dark targets, which makes it a favorite for hunting and general field use. Ivory tends to shine brighter on lighter backgrounds, while fiber optic glows in daylight. Gold is the classic, all-around choice that works well with peep and receiver sights.
This model measures .375" in height, which is taken from the bottom of the dovetail to the top of the bead. That height pairs well with many rear peep and receiver sight setups. If your rear sight has bottomed out and still shoots high, a taller front like this can bring your point of impact back down.
| UPC | 871373002553 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 603721 |
| Color | Gold |
| Style | Ramp Mounted |
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