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The Marble Arms 37-W is a barrel-mounted front sight built for folks who shoot iron sights the old-fashioned way and want a bead that actually shows up. It carries a .375" overall height and a 1/16" white bead, which is the smaller of the two common bead sizes and gives you a finer aiming point when you're threading a shot through brush or lining up on a distant target. The whole thing is machined from steel, so it holds up to years of hard use and rough handling the way these sights always have.
This model drops into a standard 3/8" dovetail, roughly .531" wide at the base, which makes it a natural fit for a huge range of lever guns and older bolt sporters from the likes of Winchester, Marlin, Remington, and Savage. It's worth measuring your existing dovetail before ordering, since these sights typically run a hair oversized on purpose. That's by design, giving you a little material to file down for a tight, drift-adjustable fit rather than a sloppy one that walks under recoil.
The white bead is the reason a lot of hunters reach for the 37-W over a gold one. Against dark timber, shadowed game, or a black bullseye, a white bead jumps out and stays visible in low light better than gold does for many eyes. Pair it with a peep or a semi-buckhorn rear and you've got a fast, instinctive sight picture that gets you on target without any batteries or fiber to fuss over.
Marble Arms has been building front sights out of Michigan since the 1890s, and the 37-W carries that same time-tested contour that made the brand a factory choice for American gunmakers. It's a simple, rugged, all-American part that does one job and does it well. If you're restoring an old rifle or just want a proper iron sight that'll outlast you, this is a solid pick.
It's designed for a standard 3/8" dovetail, which covers a wide range of lever guns and older bolt sporters from Winchester, Marlin, Remington, Savage, and others. Measure your existing dovetail before ordering to confirm the match. Because these sights are often cut a touch oversized on purpose, some minor filing may be needed for a snug fit.
The 37-W has a .375" overall height, measured from the top of the bead to the bottom of the dovetail. Height matters when you're matching your front sight to your rear so the rifle prints where you aim. If you're not sure which height you need, compare it against your original sight or work out the math against your rear sight's adjustment range.
It comes down to your eyes and your conditions. A white bead tends to stand out better against dark timber, shadowed game, and black targets, while gold can shine brighter in open daylight. Many hunters prefer white for low-light woods work and quick target acquisition.
Often, yes. These sights are frequently sized slightly oversized so you can file the base to get a tight, secure fit in your dovetail rather than a loose one. A small triangle file makes quick work of it, and once seated it drifts side to side for windage.
| UPC | 871373002164 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 103732 |
| Color | White |
| Style | Barrel Mounted |
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