The UTG ACCU-SYNC Rear Sight (brand part number MNT-957) is a spring-loaded, flip-up rear sight built by Leapers for Picatinny rail-equipped rifles. The dual aperture design lets shooters choose between a wider aperture for fast close-range acquisition and a smaller one for precise longer-range shots, with tool-free windage adjustments for on-the-fly customization. A Posi-lock push button automatically deploys the sight and locks it open, preventing accidental collapse mid-string, and a single locking Torx screw with squared recoil stops keeps zero secure through removal and reinstallation. Paired with the matching UTG ACCU-SYNC Front Sight, it forms a complete, same-plane backup sighting system for tactical and competition rifles.

Key Specifications

• Features a dual aperture design for both fast close-range and precise longer-range sight pictures.
• Includes tool-free windage adjustments for quick on-the-fly zeroing changes.
• Uses a Posi-lock push button that automatically deploys and locks the sight to prevent accidental collapse.
• Constructed from CNC-machined 6061-T6 aluminum and steel for durability.
• Finished in matte black anodize for wear and corrosion resistance.
• Secured by a single locking Torx screw with squared recoil stops for a repeatable return to zero.
• Folds to a low-profile 0.63 inch stowed height to minimize rail space usage.
• Weighs just 1.4 ounces.
• Measures 3 inches in overall length.
• Designed to pair with the matching UTG ACCU-SYNC Front Sight for a same-plane sighting system.

Frequently Asked Questions

Does this sight require tools to adjust? No, windage adjustments are tool-free for quick changes.

How much does it weigh? Just 1.4 ounces, keeping added weight on a Picatinny rail to a minimum.

Does it work with a matching front sight? Yes, it’s designed to pair with the UTG ACCU-SYNC Front Sight for a complete same-plane sighting solution.

Buy the UTG ACCU-SYNC Dual Aperture Flip-Up Rear Sight

Add a durable, fast-deploying backup sight to any Picatinny-equipped rifle without hogging rail space. Order it from our Leapers lineup, part of our gun sights selection, at our Lubbock, Texas gun shop for fast, direct shipping.