Magpul MBUS Pro Sight Rear Rear Sight Black Folding for AR-15

Unwavering Reliability: The Magpul MBUS Pro Rear Sight for AR-15 Platforms

For discerning shooters who demand peak performance, uncompromising durability, and absolute reliability from their firearm accessories, the Magpul MBUS Pro Sight Rear stands as an indispensable component. Engineered to provide a robust, low-profile, and highly functional backup sighting solution, this all-steel sight addresses critical needs for AR-15 owners across all disciplines, from tactical operators and competitive shooters to dedicated enthusiasts and responsible citizens.

Why Backup Iron Sights (BUIS) Are Essential for Your AR-15

In the dynamic world of firearms, primary optics, while advanced, are not infallible. Whether due to battery failure, impact damage, extreme environmental conditions, or simply human error, relying solely on an electronic optic can leave a shooter vulnerable. This is where high-quality backup iron sights become not just an accessory, but a critical life-saving component. The Magpul MBUS Pro Rear Sight is specifically designed to fill this vital role, ensuring that if your primary optic fails, you can seamlessly transition to an always-on, always-ready aiming system. It provides the peace of mind that comes from knowing you have a fail-safe, allowing you to maintain situational awareness and engagement capability in any scenario.

Addressing Common Shooter Concerns with the Magpul MBUS Pro Rear Sight

Many AR-15 users frequently ask: "What are the most durable backup sights for my rifle?" or "How do I ensure my sights can withstand harsh conditions?" The Magpul MBUS Pro Sight Rear provides definitive answers to these questions through its meticulous design and superior material selection. Unlike many polymer alternatives, the MBUS Pro is constructed entirely from steel, offering unparalleled resistance to impacts, temperature fluctuations, and general wear and tear. This is a critical factor for anyone who uses their AR-15 in demanding environments, whether for duty, competition, or defensive applications where equipment failure is not an option.

Unrivaled Durability: Steel Construction and Melonite QPQ Finish

The foundation of the Magpul MBUS Pro Sight Rear's legendary toughness lies in its material composition and finish. Crafted from premium, corrosion-resistant all-steel, this sight is built to endure. But Magpul takes it a step further with its proprietary Melonite QPQ finish. What is Melonite QPQ, and why is it so important for a firearm accessory?

• Melonite QPQ (Quench-Polish-Quench): This advanced thermochemical treatment process significantly enhances the surface hardness, wear resistance, and corrosion resistance of steel components. It forms an incredibly tough, smooth, and uniform surface layer that is far superior to traditional bluing or phosphate finishes.
• Extreme Wear Resistance: The QPQ process reduces friction and improves lubricity, making the MBUS Pro exceptionally resistant to abrasive wear from repeated adjustments or contact with other gear.
• Superior Corrosion Protection: Melonite QPQ creates a barrier that actively repels moisture and corrosive agents, ensuring your sights remain functional and aesthetically sound even after exposure to rain, sweat, mud, or harsh cleaning solvents. This is especially vital for users operating in diverse climates or marine environments.
• Enhanced Hardness: The surface hardness achieved through QPQ treatment makes the sight highly resistant to scratches, dents, and dings, maintaining its structural integrity and zero retention even after accidental drops or impacts.

This commitment to robust materials and finishes means that when you deploy your MBUS Pro Rear Sight, you can trust its integrity, regardless of the challenges you face.

Optimal Design for the Modern AR-15 Platform

The Magpul MBUS Pro Sight Rear is not just durable; it's intelligently designed for maximum functionality with minimum bulk. Its low-profile design is a significant advantage, particularly for those running large primary optics or limited rail space. When stowed, the sight sits incredibly flat, barely noticeable until needed. This prevents snagging on clothing or gear and ensures it doesn't interfere with your field of view when using a magnified optic.

Key design elements include:

• Folding Mechanism: The sight smoothly folds down when not in use, protecting the apertures and presenting a sleek, snag-free profile. Its robust spring-loaded mechanism ensures rapid, positive deployment with a simple flick, ready for immediate use.
• Standard AR Sight Height: When deployed, the MBUS Pro Rear Sight automatically locks into a standard AR sight height. This crucial feature means a consistent and familiar sight picture for users accustomed to the AR-15 platform, simplifying transitions and minimizing the need for re-training.
• Precision Windage Adjustment: The sight features a low-profile knob for windage adjustments, requiring no tools. This "tool-less" adjustment capability is a major advantage in the field, allowing for quick and precise zeroing or wind correction on the fly. Positive detents ensure that once adjusted, the setting remains secure.
• Dual Aperture System: The MBUS Pro Rear Sight incorporates a dual aperture system, providing versatility for various shooting conditions.
  • Small Aperture (0.07 inches): Ideal for precision shots at longer distances, offering a sharper sight picture and reducing visual clutter.
  • Large Aperture (0.19 inches): Perfect for rapid target acquisition at closer ranges, especially in low-light conditions or when engaging multiple targets quickly.
• Fine Adjustment Increments:
  • For rifles with a 14.5" sight radius, each click provides 0.5 MOA (0.566 inches at 100 meters) of adjustment.
  • For rifles with a 20" sight radius, each click provides an even finer 0.4 MOA (0.410 inches at 100 meters) of adjustment.

These precise adjustment increments allow shooters to dial in their zero with exceptional accuracy, maximizing the potential of their AR-15 platform.

Seamless Integration with AR-15 Platforms

The Magpul MBUS Pro Sight Rear is engineered for universal compatibility with standard AR-15 components. It mounts directly to any MIL-STD 1913 Picatinny Rail or STANAG 4694 Rail, which are the industry standards for mounting accessories on modern sporting rifles. Its secure clamping mechanism ensures a rock-solid attachment, maintaining zero even under heavy recoil or rigorous use. This makes it an ideal choice for any AR platform firearm, whether a custom build, a duty rifle, or a recreational shooter's go-to carbine.

Applications and Use Cases: Where the MBUS Pro Excels

The versatility and robustness of the Magpul MBUS Pro Rear Sight make it suitable for a wide array of applications:

• Tactical and Duty Use: Law enforcement and military personnel rely on equipment that won't fail. The MBUS Pro's steel construction and reliable deployment offer the redundancy necessary for mission-critical operations.
• Competitive Shooting: For disciplines like 3-Gun or tactical rifle matches, quick transitions and absolute reliability are paramount. The MBUS Pro provides a dependable backup if primary optics encounter issues mid-stage.
• Home Defense and Personal Protection: In a high-stress scenario, simple, intuitive, and always-on sights are crucial. The MBUS Pro offers this crucial reliability without the need for batteries.
• Hunting (AR-15 Platform): For hunters using AR-style rifles, especially in rugged terrain or unpredictable weather, having durable backup sights ensures a successful hunt even if primary optics are compromised.
• Training and Skill Development: Practicing with iron sights helps improve fundamental shooting skills, and the MBUS Pro offers a high-quality platform for this essential training.

The Magpul Difference: Commitment to Excellence

Magpul is a brand synonymous with innovation, quality, and user-focused design in the firearms accessory market. Their reputation is built on rigorously tested products that perform under the most demanding conditions. The MBUS Pro line exemplifies this commitment, offering professional-grade features and materials at a competitive price point. The "Made in the USA" stamp is not just a label; it signifies adherence to stringent manufacturing standards and a dedication to supporting domestic industry.

When you choose the Magpul MBUS Pro Sight Rear, you are investing in a product designed by shooters, for shooters, with an emphasis on performance, longevity, and peace of mind. It’s an essential addition to any AR-15, ensuring that you are always prepared, regardless of the challenges that arise.

Availability and Purchase

The Magpul MBUS Pro Sight Rear, identified by UPC 873750008387 and SKU MAG276-BLK, is available in Black and can be found at reputable firearm accessory retailers like DEGuns. Investing in this critical component for your AR-15 means investing in unwavering reliability and performance when it matters most.

Magpul MBUS Pro Rear Sight Specifications