Keep your scope perfectly vertical—and your shots perfectly honest—with the UTG ACCU-SYNC® Anti-cant Leveler, 30mm (MT-RTR3). Designed to integrate cleanly with 30mm UTG ACCU-SYNC® cantilever mounts and rings, this compact accessory adds a magnetic flip-to-side bubble level right where you need it, helping you eliminate scope cant—one of the most common hidden causes of horizontal drift and inconsistent impacts when dialing elevation or shooting at distance. Built from durable 6061-T6 aluminum with a matte black anodized finish, the MT-RTR3 is a smart, low-profile upgrade for precision shooters, hunters, and anyone who wants repeatable accuracy from a 30mm optic setup. Leapers
If you’re searching for a UTG 30mm scope level, anti-cant bubble level, ring-top scope leveler, or MT-RTR3 ACCU-SYNC leveler, this model is purpose-built to stay out of the way until you need it—and then give you an instant visual check before you press the trigger.
Why an Anti-Cant Leveler Matters for Real Accuracy
Even a small amount of rifle cant can create frustrating misses—especially as distance increases. When the rifle tilts, your “up” elevation adjustment no longer tracks straight up/down relative to gravity, and your impacts can drift left or right. A scope leveler helps you:
Confirm the rifle is upright before each shot
Improve consistency when dialing elevation
Make your holdovers and dope more reliable
Shoot more confidently from uneven terrain (hillsides, barricades, awkward positions)
Magnetic Flip-to-Side Bubble: Use It When You Need It, Stow It When You Don’t
The MT-RTR3 features a magnetic flip-to-side anti-cant bubble leveler. Flip it out for a quick check while building your position, then flip it back to keep your rifle streamlined for movement, transport, or storage. Leapers
This is especially handy for hunters and competition shooters who want a level available—but don’t want extra snag points.
Made for 30mm UTG ACCU-SYNC Cantilever Mounts and Rings
Compatibility is the whole point of a clean integration. UTG specifies the MT-RTR3 as compatible with 30mm UTG ACCU-SYNC® cantilever mounts and rings, letting you add leveling capability without clunky clamp-on solutions that crowd your turrets or interfere with bolt throw and hand placement. Leapers
Durable 6061-T6 Aluminum with Matte Black Anodize
The leveler is built from 6061-T6 aluminum and finished in matte black anodization, giving it the durability and corrosion resistance you want for a rifle-mounted accessory that lives through recoil, rain, dust, and range bag abuse. Leapers
UTG also highlights ergonomically dehorned corners and melted contours, a small but meaningful detail that helps reduce sharp edges that can catch on gloves, slings, or soft cases. Leapers
Installation Note: Recommended Ring Top Screw Torque
For best results, UTG recommends tightening the ring top screws to about 25 inch-lb. Leapers
That guidance helps you mount securely while avoiding over-torqueing—important for maintaining proper ring pressure and protecting your scope tube.
Great for Hunting, Precision, and Competition Builds
The MT-RTR3 is a practical upgrade for:
Long-range shooting where cant errors multiply quickly
PRS-style training and barricade shooting with uneven rifle angles
Hunting in steep or rolling terrain
Zeroing and load development, when you want clean, repeatable data
Product Details for SEO, Listings, and Inventory
Brand: UTG / Leapers, Inc.
Product: UTG ACCU-SYNC® Anti-cant Leveler
Tube Size: 30mm Leapers
Model / Part Number: MT-RTR3 Leapers
UPC/EAN: 4717385556980 OpticsPlanet
Key Feature: Magnetic flip-to-side bubble level Leapers
Construction: 6061-T6 aluminum, matte black anodized Leapers
Patent: US PAT. 11293721 Leapers
The Clean, Integrated Way to Stay Level
If you run a 30mm optic and want a simple, durable solution to reduce cant-induced errors, the UTG ACCU-SYNC Leveler 30mm (MT-RTR3) is an easy win. With a magnetic flip-to-side bubble, ACCU-SYNC compatibility, and tough anodized aluminum construction, it helps you confirm what matters most before every shot: your rifle is level, your data is valid, and your point of impact stays true. Leapers
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