Description
When your front sight sits a touch too low to pair with your rear, a dovetail ramp is the fix, and Marble Arms has been making these for generations. This one is built for a .625" barrel diameter and adds .100" of height measured from the bottom of the radius to the bottom of the dovetail. It's machined from solid steel in black, so it holds up under recoil and keeps that classic, understated profile on a rifle or muzzleloader.
The dovetail slot is the real selling point. It lets you drop in the front sight blade of your choice, whether that's a standard bead or a fiber optic for brighter aiming in low light. Marble Arms also offers ivory and brass bead options that seat into the same cut, so you're not locked into a single look once the ramp is on.
What the Marble Arms .625" Dovetail Ramp Brings to Your Build
This ramp follows the barrel contour for a factory-correct appearance and ships with a 6-48 screw for mounting. The base attaches to the barrel and can be soldered for a permanent, rock-solid hold, which is the preferred route for anyone wanting a sight that won't shift after years of use. The .100" height is the lower of the two offerings in this line, making it a smart pick when you need just a little lift to get your sight picture dialed.
Installing the .100" Dovetail Front Ramp
Fitting a ramp like this is a classic gunsmithing job. You'll want a brass or nylon punch, a hammer, and a safe-edge file on hand to seat the ramp and drift in your blade. It's straightforward work for anyone comfortable at the bench, though plenty of folks hand this one to their local smith for a perfect solder job. Either way, the end result is a rugged iron sight setup that looks right at home on a traditional rifle.
Made in the USA, this is a dependable piece from a name that's been the standard in iron sights since 1892.
Key Specifications
- Manufacturer: Marble Arms
- Manufacturer Part Number: 072310
- UPC: 871373007190
- Barrel Diameter (ID): .625"
- Height: .100"
- Color: Black
- Material: Solid Steel
- Fitment: Universal Rifles
- Mounting Screw: 6-48 (included)
- Sight Attachment: Dovetail
- Country of Origin: Made in USA
What’s Included
- Marble Arms dovetail front ramp (.625" ID, .100" height, black)
- 6-48 mounting screw
Frequently Asked Questions
What size barrel does this Marble Arms front ramp fit?
This ramp is contoured for a .625" barrel diameter. Matching the ramp to your barrel's outside diameter is key for a clean fit and correct appearance, so double-check your barrel contour before ordering.
How much height does the .100" dovetail ramp add?
It adds .100" of height, measured from the bottom of the radius to the bottom of the dovetail. This is the lower of the two heights Marble Arms offers in this line, making it ideal when you only need a small amount of lift to line your front sight up with your rear.
What front sights work with this dovetail ramp?
The dovetail slot accepts standard bead blades as well as fiber optic, ivory, and brass bead sights that fit the Marble Arms cut. That gives you room to pick the front sight style and visibility that suits your rifle and your eyes.
How does the ramp attach to the barrel?
The ramp mounts with the included 6-48 screw and can also be soldered to the barrel for a permanent hold. Soldering is the preferred method for a sight that won't budge over years of shooting, and many folks have a gunsmith handle that step.





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