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The Marble Arms #66 is one of those parts that just does its job without drama. It's a sporting rear sight base built to fit a standard 3/8" dovetail, wearing a flat top profile and a black finish that looks right at home on a lever gun, single shot, or classic bolt rifle. The long shank base gives it a solid seat in the dovetail so it stays put and indexes the same way shot after shot, which is exactly what you want out of a rear reference.
This is the standard-height version in Marble's flat top lineup, giving you an elevation range of roughly .300" to .510" so you can tune your point of impact once it's fitted. It ships with a step elevator, so raising or lowering your notch is as simple as sliding the elevator to the next step. Windage gets sorted the old-school way by drifting the sight in the dovetail, which is plenty repeatable once you've got it centered.
Marble Arms has been building rear sights for close to a century, and their stuff is all steel and made in the USA. The flat top design keeps a clean, uncluttered sight picture, which a lot of folks prefer over a busy buckhorn when they're chasing a sharp notch and fast target pickup. It's a common upgrade or replacement on Winchester, Marlin, and Uberti-style rifles, and it's a staple among cowboy action crowds who want their iron sights looking and working the part.
Dropping this into an existing 3/8" dovetail is straightforward with a brass or nylon punch and a little patience, though some rifles may need minor fitting to get a snug fit. If your dovetail is fresh or a touch tight, take your time and go slow rather than forcing it. Once it's seated and drifted to center, you've got a rugged, no-nonsense rear sight ready for range work or the deer woods.
The #66 is built for a standard 3/8" dovetail, which covers a wide range of rifles including many Winchester, Marlin, Remington, Savage, and Uberti-style lever guns. It's a popular replacement on stock cowboy action rifles. If your rifle already has a 3/8" dovetail cut for a rear sight, this one is designed to drop right in, though some may need minor fitting.
Elevation is handled by the included step elevator, which you slide forward or back to raise or lower the notch, giving you a range of about .300" to .510". Windage is adjusted by drifting the sight left or right within the dovetail using a brass or nylon punch. Once you've got it centered and stepped where you want it, it holds nicely.
Yes, Marble Arms builds these all-steel and in the USA. That's a big part of why they've been trusted for close to a hundred years. The black finish keeps it looking sharp and helps it blend right in on traditional rifles.
The #66 is the standard-height flat top with an elevation range of roughly .300" to .510", while the #66H is the taller version that runs about .350" to .630". Both share the same long shank flat top design. Which one you want depends on your barrel diameter and front sight height, so measure before you order if you're unsure.
| UPC | 871373004069 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 006600 |
| Color | Black |
| Style | DOVETAIL |
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