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When the original front sight on an old lever gun goes missing, gets bent, or just isn't tall enough to zero, this is the kind of part that gets the job done right. The Marble Arms 41-W is a barrel-mounted front sight with a 3/32" white bead and a .410" overall height, built from solid steel with the graceful sloping contour Marble has been turning out since the early 1900s. That white bead is the standout here. It catches light fast and stands out against dark game, dark backstops, and shaded woods where a plain black post tends to disappear.
This one is the barrel-mounted style, meaning it seats directly into a 3/8" dovetail cut into the barrel rather than dropping into a separate ramp. Height on a Marble front sight is measured from the bottom of the dovetail to the top of the bead, and the "41" in the name tells you it runs .410" tall. Like most quality dovetail sights, expect it to come slightly oversized so you can hand-fit it for a tight, rattle-free hold. A few passes with a fine triangle file on the base gets it seated snug, and once it's in, you can drift it left or right to line up with your rear sight.
Sight height matters more than folks realize. If your rear sight is bottomed out and the gun still shoots high, or you've swapped to a peep and lost your zero, moving to the correct front sight height is usually the fix. The 41-W lands in the middle of Marble's range, which spans roughly .260" up to .570", so it pairs well with a lot of common lever guns and rimfires. Measuring your current sight with calipers before ordering takes the guesswork out of it.
Marble Arms has been the go-to name in iron sights for generations, and this white-bead version is a solid pick for anyone restoring an old rifle, brightening up a hunting gun, or just wanting a front bead that's easier on aging eyes.
It's a barrel-mounted design that seats into a 3/8" dovetail cut directly into the barrel, no ramp required. The sight typically comes a touch oversized, so a few light passes with a fine file on the base lets you fit it for a tight, secure hold. Once it's seated, you can drift it side to side to line up windage with your rear sight.
The "41" refers to the overall height of .410", measured from the bottom of the dovetail to the top of the bead. The "W" designates the white bead, which shows up fast in low light and against dark targets. It carries a 3/32" bead width, one of Marble's two standard bead sizes.
The quickest way is to pull your current front sight and measure it with calipers, then match the height. If your rear sight is bottomed out and the gun still shoots high, or you've added a peep sight and lost your zero, you may need a different height. Marble offers front sights from roughly .260" up to .570", so there's usually a size that dials you in.
It's built for the common 3/8" barrel dovetail found on many vintage lever actions and rimfires, so it's a popular replacement for those rifles. That said, dovetail width and sight body length can vary between guns, so a bit of hand-fitting is normal. Checking your dovetail dimensions and clearance around any barrel bands before installing is always smart.
| UPC | 871373002683 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 204132 |
| Color | White |
| Style | Barrel Mounted |
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