The Magpul MBUS 3 Rear Sight is a professional-grade backup iron sight with rapid-select apertures and ambidextrous deployment for reliable target acquisition on any Picatinny rail.
The Magpul MBUS 3 rear sight delivers professional-grade backup aiming capability for sport shooters, hunters, and tactical users. Furthermore, this sight mounts securely to any standard Picatinny rail without tools or gunsmithing. The black anodized finish resists corrosion and blends seamlessly with modern rifles.
Rapid-Select Aperture System
This rear sight features multiple aperture options for different shooting distances and lighting conditions. Additionally, you transition between apertures without removing your hand from the rifle. The intuitive design works reliably under pressure, making it trusted by competitive shooters and professionals alike.
Ambidextrous Push-Button Deployment
The spring-loaded push-button works equally well for left and right-handed shooters. Moreover, the button locks securely when deployed and retracts smoothly when stowed. Therefore, deployment happens instantly during critical moments without fumbling.
Reliable Backup to Primary Optics
The MBUS 3 serves as an excellent backup to red dot sights or magnified scopes. Additionally, it co-witnesses with popular optics for redundant aiming if your primary sight fails. The robust aluminum construction withstands harsh field conditions and demanding use.
Quick Installation
Installation takes minutes with standard Picatinny rail mounting. Additionally, no tools or gunsmithing expertise is required. Therefore, you have backup iron sights ready to shoot immediately after purchase.
Available at Western Sport – Roanoke, TX
Western Sport is a licensed FFL/SOT dealer serving North Texas and the DFW area since 2007. Furthermore, we maintain inventory of quality Magpul optics and accessories for immediate availability. Contact us at 817-393-4000 to check stock and place your order today.
Why Buy from Western Sport?
Our experienced shooting staff provides personalized guidance to match backup sights with your specific rifle platform.
Licensed FFL/SOT dealer with competitive pricing on trusted Magpul products and fast, reliable shipping.
Fast transfers and expert support for North Texas and DFW area customers since 2007.
Every purchase includes Western Sport’s commitment to customer satisfaction and after-sale support.
We stand behind every product we sell with manufacturer warranty coverage and local service expertise.
Frequently Asked Questions
Q: Does the Magpul MBUS 3 fit AR-15 and AK rifles?
A: Yes, the MBUS 3 rear sight fits all standard Picatinny rails, including AR-15 platforms, AK-pattern rifles with Picatinny mounts, and any firearm with 1913 rail slots. Always verify your rifle’s rail standard before purchase for proper fit.
Q: Can I use this rear sight with a magnified scope?
A: Absolutely. The MBUS 3 works excellently as a backup sight behind magnified optics and co-witnesses with many popular scopes. This redundancy provides critical reliability if your primary optic fails during use.
Q: What is Magpul’s warranty on the MBUS 3?
A: Magpul products carry the manufacturer’s warranty against defects in materials and workmanship. Additionally, Western Sport stands behind every product we sell and can assist with any warranty claims or issues.
Q: What is the best way to zero the Magpul MBUS 3?
A: Start at 25 yards with a stable shooting position and aiming device, then use aperture adjustments to center your impact point. Next, move to 100 yards to verify your zero and make final adjustments for accurate performance.
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