Description
Your optic is only as good as what holds it in place, and the Leupold Mark 4 35mm Medium rings take that job seriously. This is a matched pair of aluminum rings in a matte Flat Dark Earth finish, built to clamp any riflescope with a 35mm main tube to a standard Picatinny rail. The cross-slot design is the same one Leupold has leaned on for years, cut to tight tolerances so your scope sits where you put it and stays there.
What the Mark 4 35mm Rings Bring to Your Build
Aluminum construction keeps the weight down to roughly 3.6 ounces for the pair, which matters when you're already hanging a heavy 35mm optic off the rifle. The medium height gives you an optical centerline around 1.06 inches, leaving room for mid-to-large objective bells to clear the barrel and rail while still letting you settle into a solid cheek weld. That combination makes these a natural fit for precision rigs, tactical builds, and hunting setups running larger glass.
Getting the FDE Mark 4 Rings Mounted Right
Installation follows the usual Leupold cross-slot routine. Drop the cross bolts into your rail slots, push the rings forward so they seat against the slot, and snug the keeper nuts to 65 inch-pounds. Once your scope is leveled and your eye relief is dialed, bring the ring cap screws down in a crisscross pattern to 28 inch-pounds, keeping the gap even on both sides. A torque wrench and a scope leveling tool make the whole process painless and repeatable.
Why the Flat Dark Earth Finish Works
Beyond matching the FDE furniture a lot of folks are running these days, the matte finish knocks down glare so you're not throwing off reflections in the field. It's a practical touch on a ring set that's really about one thing: keeping the link between your scope and your rifle rock solid. Made in the USA, these rings carry the Mark 4 name for a reason.
Key Specifications
- Manufacturer: Leupold
- Model: Mark 4
- Manufacturer Part Number: 185236
- UPC: 030317040468
- Tube Diameter: 35mm
- Ring Height: Medium
- Optical Centerline: 1.06 inches
- Material: Aluminum
- Color / Finish: Flat Dark Earth (Matte)
- Mount Type: Picatinny Rail (Cross-Slot)
- Quantity: Pair (2 rings)
- Weight: Approx. 3.6 oz (pair)
- Keeper Clamp Torque: 65 in-lbs
- Ring Cap Screw Torque: 28 in-lbs
- Country of Origin: USA
What’s Included
- Pair of Leupold Mark 4 35mm medium aluminum rings (2 rings)
- Mounting hardware
Frequently Asked Questions
What size scope tube do the Mark 4 35mm rings fit?
These rings are built for riflescopes with a 35mm main tube. If your optic has a 1-inch or 30mm tube, you'll want a different size in the Mark 4 lineup. Double-check your scope's tube diameter before ordering so you get the right fit.
Will these rings work on any Picatinny rail?
Yes. The Mark 4 uses a cross-slot design that drops onto a standard Picatinny rail, so they'll fit the rail on most modern bolt guns, AR-pattern rifles, and chassis systems. Just slide the cross bolts into your rail slots and torque them down.
What torque should I use when mounting these?
Leupold calls for 65 inch-pounds on the keeper nuts that clamp the rings to the rail, and 28 inch-pounds on the ring cap screws that hold the scope. Tighten the cap screws evenly in a crisscross pattern to keep the gap balanced. A calibrated torque wrench is the way to go here.
Is the medium height tall enough for a large objective scope?
Medium rings put the optical centerline around 1.06 inches, which clears most mid-to-large objective bells on a Picatinny rail. For very large objectives or oversized bells you may want to compare against the high or super-high options in the series. Measuring your objective clearance ahead of time takes the guesswork out of it.




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