Add a true “plan B” to your optic-forward AR setup—without cluttering your top rail. The Leapers, Inc. UTG Accu-Sync® AR15 45 Degree Offset Flip-up Rear Sight (MT-945) is built for shooters who run LPVOs, magnified scopes, or primary red dots and still want instant access to iron sights. With a 45° angled offset, dual-aperture rear sight, and a tool-free windage adjustment wheel, the MT-945 lets you transition to irons fast by simply rolling the rifle slightly—no removing optics, no awkward cheek weld compromises, and no wasted rail space. Leapers+1
If you’re searching for a UTG Accu-Sync offset rear BUIS, an AR15 45 degree offset rear sight, or a flip-up Picatinny rear sight that’s designed to work alongside magnified optics, the MT-945 is a practical, hard-use solution with modern features and a clean matte black finish.
45° Offset Advantage: Fast Transitions While Keeping Your Optic
Offset irons exist for one reason: speed. The MT-945’s 45° offset orientation allows you to keep your magnified optic as the primary while maintaining a ready-to-go iron sighting option for close-range work, optic occlusion, or training drills that demand rapid transitions. Rotate the rifle slightly, pick up the iron sight picture, and keep moving. Leapers+1
This is especially valuable for:
LPVO carbines that need a quick close-range option
Competition stages with mixed distance targets
Training where you practice optic failure transitions
Duty-ready builds where redundancy matters
Manual Flip-up with Posi-lock Retention: Stays Deployed When You Need It
A flip-up sight must do two things well: deploy cleanly and remain solid. The UTG Accu-Sync rear sight uses a Posi-lock retention plunger that locks the sight in the deployed position, helping prevent unwanted collapse when in use. That means more confidence in your sight picture and less distraction during recoil, movement, or barricade work. Leapers+1
Dual Aperture Rear Sight for Versatile Use
The MT-945 features a dual-aperture rear sight—giving you flexibility to choose the aperture that best fits your shooting needs (speed vs. precision). This is a proven iron-sight layout that remains popular because it simply works across a wide range of distances and lighting conditions. Leapers+1
Tool-free Windage Adjustment Wheel: Quick Corrections, No Extra Tools
Zeroing and fine-tuning shouldn’t require a toolbox. The MT-945 includes a tool-free windage adjustment wheel, making it easy to dial windage corrections at the range, during a class, or while confirming your offset zero after a setup change. Leapers+1
Built for Hard Use: CNC Machined 6061-T6 Aluminum + Steel
UTG builds the Accu-Sync offset rear sight with CNC machined 6061-T6 aluminum and steel, finished in matte black anodize for durability and corrosion resistance. This construction aims to balance strength and weight while standing up to repeated folding, deployment, and recoil cycles on AR-pattern rifles. Leapers+1
Secure Picatinny Mount: Torx Locking Screw + Squared Recoil Stops
Holding zero is non-negotiable for any BUIS—especially an offset sight that may see bumps and frequent handling. The MT-945 uses a single locking Torx screw and squared recoil stops to create a secure interface on MIL-STD-1913 Picatinny rails, supporting a strong zero hold and reliable return to zero when mounted properly. Leapers+1
Mounting note: UTG’s Taiwan product page recommends tightening the side plate screw to about 35 in-lb for best results. UTG Taiwan
Standard AR15 Height Above Rail: Designed to Align Correctly
For consistent sight alignment, UTG lists a standard AR15 center height above rail of 1.42 in (36 mm) for this sight system—helpful when matching your offset rear to the proper offset front sight. Leapers
Pair It with the Matching Offset Front Sight
For a complete offset iron set, UTG specifies the matching front sight as the UTG Accu-Sync 45 Degree Offset Flip-up Front Sight (MT-745)—a clean pairing that keeps your sight picture consistent and your rifle’s layout cohesive. Leapers+1
Product Identifiers for Listings and Inventory
For purchasing, cataloging, and SEO listing accuracy, here are the key identifiers:
Brand / Manufacturer: Leapers, Inc. / UTG
Product: UTG Accu-Sync® AR15 45 Degree Offset Flip-up Rear Sight
Color / Finish: Black / Matte Black Anodize Leapers
Model / Part Number: MT-945 Leapers
EAN / UPC: 4717385553699 OpticsPlanet+1
Why Choose the UTG Accu-Sync 45° Offset Rear Sight (MT-945)?
Because it gives you a fast, reliable transition to irons without compromising your primary optic. The MT-945 combines a 45° offset for rapid access, a Posi-lock mechanism to keep the sight deployed, dual apertures for versatility, and tool-free windage for convenient zeroing—backed by a mounting system designed for secure Picatinny lockup and repeatability. Leapers+1
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