The Magpul MBUS Rear Sight is a lightweight, durable accessory designed for the AR-15 platform, offering a folding design for compact storage when not in use.
Its ease of installation and adjustment makes it a popular choice for shooters seeking reliability and precision, with a tool included for sight post adjustment.
Featuring dual aperture settings for versatility, the MBUS Rear Sight ensures quick target acquisition and accuracy, making it ideal for both tactical and recreational use.
1.1 Overview of Magpul MBUS Rear Sight
The Magpul MBUS Rear Sight is a lightweight, polymer-based accessory designed for the AR-15 platform, offering a reliable and durable solution for shooters.
Featuring a folding design, it allows for easy storage when not in use, ensuring minimal interference with other accessories on the rail system.
The sight includes dual aperture settings, providing shooters with options for precise target acquisition in various lighting conditions.
Its tool-free design simplifies adjustments, while the included hardware ensures secure mounting on Picatinny rails.
Constructed from high-quality materials, the MBUS Rear Sight is built to withstand rigorous use, making it a popular choice for both tactical and recreational applications.
With its compact profile and user-friendly features, the MBUS Rear Sight enhances shooting performance without compromising on functionality or durability.
1.2 Importance of Proper Installation and Adjustment
Proper installation and adjustment of the Magpul MBUS Rear Sight are critical for ensuring optimal performance and accuracy.
Incorrect installation can lead to misalignment, affecting the sight’s ability to hold zero and compromising shooting precision.
Following the manufacturer’s guidelines ensures the sight is securely mounted and properly aligned with the front sight, minimizing the risk of damage or malfunction.
Improper adjustment can result in inconsistent targeting, reducing the effectiveness of the sight system.
Regular checks and maintenance are essential to maintain accuracy and reliability, especially after extensive use or exposure to harsh environments.
By adhering to the installation and adjustment instructions, shooters can maximize the sight’s potential and enjoy consistent, reliable performance in various shooting scenarios.
Installation Instructions
Position the MBUS Rear Sight on the rail, ensuring proper alignment with the front sight. Flip the sight up and secure it tightly using the provided hardware.
Use the included tool to adjust and tighten the sight arm, ensuring it locks firmly in place for reliable performance during shooting sessions.
2.1 Positioning the Sight on the Rail
Begin by positioning the Magpul MBUS Rear Sight on the Picatinny rail, ensuring it aligns with your firearm’s front sight for proper orientation and functionality.
Gently slide the sight onto the rail, making sure it is centered and evenly spaced to maintain balance and avoid interference with other accessories.
Flip the sight up to its deployed position and verify that it is securely seated on the rail, with the sight arm in its locked position to prevent unintended movement.
Proper positioning ensures the sight will function reliably and maintain zero, providing accurate targeting capabilities for various shooting scenarios.
2.2 Securing the Sight to the Rail
Once the MBUS Rear Sight is properly positioned, secure it to the rail by tightening the crossbolt using a wrench or similar tool until it is snug.
Ensure the sight arm is fully locked in its upright position to maintain stability and prevent any movement during use.
Do not overtighten, as this could damage the rail or the sight itself. Proper torque ensures the sight remains firmly attached while allowing for future adjustments if needed.
A secure connection is critical for maintaining zero and ensuring reliable performance in various shooting conditions.
2.3 Initial Sight Adjustment
After securing the MBUS Rear Sight to the rail, begin the initial adjustment by ensuring the sight is in the upright position and properly aligned with the front sight.
Adjust the windage by rotating the knob on the right side of the sight. Clockwise rotation moves the point of impact to the right, while counterclockwise moves it left.
Elevation adjustments are made by moving the sight up or down. Use the provided tool to adjust the front sight post, raising or lowering it to align with the rear aperture.
Once adjustments are made, fire a test shot to check accuracy. Fine-tune the windage and elevation as needed until the shot hits the desired target location.
Ensure the sight is zeroed before finalizing the setup for optimal performance.
Adjustments
The MBUS Rear Sight allows for precise windage and elevation adjustments. Use the windage knob for left-right alignment and adjust elevation by moving the sight up or down to zero in your target accurately.
3.1 Windage Adjustment
The windage adjustment on the Magpul MBUS Rear Sight is straightforward. Locate the windage knob on the right side of the sight. To adjust, rotate the knob clockwise to move the point of impact to the right or counterclockwise to move it to the left. Each click provides a precise adjustment, ensuring accuracy. Make small increments and test your aim between adjustments. Proper windage alignment is crucial for consistent shooting performance. Always ensure the sight is securely mounted before making adjustments to avoid any shifting during the process. This feature enhances the sight’s versatility for various shooting scenarios.
3.2 Elevation Adjustment
The Magpul MBUS Rear Sight allows for precise elevation adjustments to fine-tune your aim. To adjust, flip the sight up and locate the elevation knob. Turn the knob clockwise to lower the point of impact or counterclockwise to raise it. Each click provides a consistent adjustment, ensuring accuracy. For larger adjustments, the sight can be moved up or down along the rail. The MBUS Rear Sight includes a tool for elevation adjustment, stored in the sight arm for convenience. Proper elevation alignment is essential for achieving zero and maintaining accuracy. Always ensure the sight is securely locked in place before making adjustments to prevent any movement during use. This feature ensures versatility for various shooting conditions and scenarios.
3.3 Zeroing the Sight
Zeroing the Magpul MBUS Rear Sight ensures accuracy by aligning the sight with your firearm’s point of impact. Begin by firing a group of shots at a target to determine the bullet’s strike point. Adjust the windage and elevation knobs as needed to move the rear aperture until the point of aim matches the point of impact. Secure the knobs firmly after adjustments to maintain zero. For optimal results, use a bench rest to minimize movement during the process. Regularly check and re-zero the sight after extreme use or if the sight is removed and reinstalled. Proper zeroing is critical for consistent accuracy and reliable performance in any shooting scenario.
Features and Design
The Magpul MBUS Rear Sight features a durable folding design, high-strength materials, and includes all necessary mounting hardware for easy installation and reliable performance.
4.1 Folding Design and Durability
The Magpul MBUS Rear Sight features a robust folding design, crafted from high-strength polymer, ensuring durability and reliability in harsh environments. Its compact foldable mechanism allows for easy storage, reducing bulk and preventing interference with other accessories. When deployed, the sight locks securely in place, providing a stable platform for accurate targeting. The folding design also protects the sight from potential damage when not in use. Built to withstand rigorous use, the MBUS Rear Sight is designed for long-term performance, making it a dependable choice for both tactical and recreational shooters. Its lightweight yet resilient construction ensures minimal weight addition while maintaining peak functionality.
4.2 Aperture Settings and Visibility
The Magpul MBUS Rear Sight offers dual aperture settings, providing shooters with enhanced versatility in various lighting conditions. The larger aperture is ideal for rapid target acquisition in low-light environments, while the smaller aperture allows for precise aiming in brighter settings. This feature ensures optimal visibility and accuracy, catering to different shooting scenarios. The sight’s design minimizes glare and maximizes clarity, enabling quick alignment with the front sight. The distinct apertures are easily switchable, offering a seamless transition between close-quarters and long-range engagements. This adaptability makes the MBUS Rear Sight a practical choice for both tactical applications and competitive shooting sports. Its visibility-enhancing features contribute to faster and more accurate shot placement.
4.3 Night Visibility Options
The Magpul MBUS Rear Sight offers optional night visibility enhancements, ensuring effective targeting in low-light conditions. While the base model does not include tritium inserts, shooters can upgrade by installing aftermarket tritium or fiber-optic inserts for improved visibility. These upgrades allow for faster target acquisition in dim environments, making the sight more versatile for tactical and self-defense scenarios. The sight’s design accommodates such modifications without compromising its durability or folding functionality. This adaptability ensures the MBUS Rear Sight remains a reliable choice for users requiring night visibility capabilities, enhancing its practicality for a wide range of shooting applications and environments. These optional upgrades maintain the sight’s lightweight and compact profile.
Maintenance and Care
Regular cleaning and lubrication of moving parts ensure smooth operation. Store the sight in a dry, protected environment to prevent rust and maintain functionality over time.
5.1 Cleaning the Rear Sight
Cleaning the Magpul MBUS Rear Sight is essential for maintaining its functionality. Use a soft, dry cloth to wipe away dirt, grime, or lubricant residue from the sight’s surfaces.
Avoid harsh chemicals or abrasive materials, as they may damage the finish or moving parts. For stubborn debris, lightly dampen the cloth with water or a mild solvent, but ensure the sight is dry afterward.
Use compressed air to gently remove dust or particles from tight spaces, such as the aperture or folding mechanism. Inspect the sight for any obstructions and clean the hinge area to ensure smooth folding.
For detailed cleaning, a cotton swab can be used to reach small crevices. After cleaning, allow the sight to air dry before reattaching or using it. Regular cleaning prevents malfunctions and ensures optimal performance.
5;2 Lubrication of Moving Parts
Lubrication is crucial for maintaining the smooth operation of the Magpul MBUS Rear Sight’s moving components. Apply a small amount of high-quality gun oil to the hinge pins and folding mechanism to ensure smooth folding and unfolding.
Use a lightweight, non-greasy lubricant to avoid attracting dirt or debris. Gently wipe off any excess oil with a clean cloth to prevent residue buildup. Avoid over-lubricating, as it may compromise the sight’s functionality.
After lubrication, cycle the sight several times to distribute the oil evenly. This maintenance step ensures the sight operates reliably and maintains its durability over time. Regular lubrication is essential for optimal performance in various environmental conditions.
5.3 Storage Recommendations
Store the Magpul MBUS Rear Sight in a cool, dry place to prevent moisture damage. Avoid extreme temperatures or humidity, as this may affect the sight’s polymer construction.
Keep the sight in a protective case or pouch to shield it from dust, scratches, or accidental damage. Ensure the sight is clean and free of debris before storage to maintain its functionality.
If storing for an extended period, apply a light layer of rust-inhibiting lubricant to metal components. This ensures the sight remains in optimal condition and ready for use when needed.
Accessories and Upgrades
The Magpul MBUS Rear Sight is compatible with various accessories, including adjustment tools and storage cases, to enhance functionality and longevity. Upgrades like specialized lubricants are also available.
6.1 Compatible Accessories
The Magpul MBUS Rear Sight is compatible with a range of accessories designed to enhance its functionality and durability. These include adjustment tools, such as the sight post adjustment tool, which ensures precise zeroing. Additionally, storage cases and protective covers are available to safeguard the sight when not in use. The MBUS Rear Sight also works seamlessly with other Magpul accessories, such as rail-mounted lights or lasers, allowing for a customized setup tailored to individual needs. Furthermore, compatible upgrade kits can be installed to improve visibility or add night vision capabilities, ensuring the sight remains adaptable to various shooting environments and preferences. These accessories are designed to integrate effortlessly with the MBUS system, maintaining its lightweight and rugged design.
6.2 Upgrading the Sight System
Upgrading the Magpul MBUS Rear Sight system can enhance its performance and adaptability. One popular upgrade is the MBUS Pro, which offers improved durability and precision. Additionally, users can install night visibility enhancements, such as tritium inserts or fiber-optic upgrades, for better low-light performance. The sight system is also compatible with aftermarket accessories, including specialized adjustment tools and rail-mounted optics. Upgrading the sight ensures compatibility with other components, such as front sights or scopes, while maintaining the lightweight and folding design. These upgrades are straightforward to install, requiring minimal tools, and they significantly improve the sight’s functionality for both tactical and competitive shooting scenarios. Regular maintenance and proper installation ensure optimal performance after any upgrade.
6.3 Tools Required for Maintenance
Maintaining the Magpul MBUS Rear Sight requires a few essential tools to ensure optimal performance. A sight adjustment tool, often included with the MBUS Pro, is necessary for precise windage and elevation adjustments. A Torx driver (size T10 or T15) may be needed for securing the sight to the rail or adjusting the folding mechanism. Additionally, a soft cloth and mild cleaning solution are recommended for cleaning the sight without damaging its finish. For lubrication, a small amount of silicone-based lubricant can be applied to moving parts. Optional tools include a sight alignment laser for zeroing and a torque wrench for ensuring proper rail mounting. Keeping these tools handy ensures quick and effective maintenance of the MBUS Rear Sight system.
Safety Considerations
Always handle firearms safely, ensuring the muzzle points in a safe direction. Verify proper sight alignment before firing to avoid accidental discharge. Keep the sight area clear of obstructions for reliable operation;
7.1 Safe Handling of the Firearm
Always handle firearms with care, ensuring the muzzle points in a safe direction. Keep fingers away from the trigger until ready to shoot. Before adjusting the MBUS Rear Sight, verify the firearm is unloaded to prevent accidental discharge. Use proper techniques to avoid mishaps. Regularly inspect the sight and firearm for damage or wear. Ensure the sight is securely mounted and adjusted correctly before use. Follow all safety guidelines provided by Magpul and firearm manufacturers. Proper handling ensures reliability and accuracy, while negligence can lead to serious injury or equipment damage. Stay alert and maintain control of the firearm at all times.
7.2 Ensuring Proper Sight Alignment
Proper sight alignment is critical for accuracy. Ensure the rear aperture of the MBUS Rear Sight aligns perfectly with the front sight post, with both centered and level. When folding the sight, verify it locks securely to maintain zero. Use the windage adjustment knob to fine-tune horizontal alignment if necessary. Always check alignment before firing, as improper setup can affect accuracy. The MBUS design allows for quick visual confirmation, with dual aperture settings for varying light conditions. Proper alignment ensures reliable performance, while misalignment can lead to inconsistent shot placement. Regularly inspect and adjust the sight to maintain optimal alignment and accuracy. This step is essential for both tactical and recreational shooters to achieve precise results.
7.3 Avoiding Obstructions
Avoiding obstructions is crucial for maintaining the effectiveness of the Magpul MBUS Rear Sight. Ensure the sight and its apertures remain unobstructed by debris, dirt, or other accessories. The folding design helps prevent interference when the sight is not in use. Regularly inspect the sight for dirt or grime that could block visibility. Clean the apertures and surrounding areas to maintain clarity. When stowed, confirm the sight is securely folded to avoid accidental damage or interference; Proper storage in a dry, protected environment also prevents obstructions caused by environmental factors. Always check the sight’s alignment and visibility before use to ensure optimal performance. Obstructions can significantly impact accuracy, so consistent maintenance is essential for reliable operation.
Troubleshooting Common Issues
Common issues with the Magpul MBUS Rear Sight include the sight not holding zero, difficulty adjusting windage, or improper folding. Check for loose screws, clean debris, and ensure proper alignment for optimal performance.
8.1 Sight Not Holding Zero
If the Magpul MBUS Rear Sight fails to hold zero, ensure the mounting screws are tightened securely to the rail. Check for debris or damage to the sight or rail. Verify the sight arm is fully locked in the upright position. If issues persist, clean the sight and rail to remove any obstructions. Ensure proper alignment during zeroing and test accuracy after adjustments. Regular maintenance and inspection can prevent this issue. Always follow the manufacturer’s guidelines for installation and adjustment to maintain optimal performance and reliability. Proper care ensures the sight remains accurate and functional over time.
8.2 Difficulty in Adjusting Windage
Difficulty in adjusting windage on the Magpul MBUS Rear Sight can often be resolved by ensuring the adjustment knob is free from debris or obstruction. Clean the knob and surrounding area with a soft brush or cloth to remove any dirt or grime. Verify that the sight is properly secured to the rail, as loose mounting can hinder adjustment. Rotate the windage knob gently but firmly to avoid stripping the threads. If resistance persists, check for over-tightening of the mounting screws, as this can restrict movement. Ensure the sight arm is fully locked in the upright position before making adjustments. Proper alignment and lubrication of moving parts can also improve ease of adjustment. Always refer to the manufacturer’s instructions for guidance. Regular maintenance ensures smooth operation and accuracy. Avoid using excessive force, as this may damage the mechanism. If issues remain, consider consulting the troubleshooting section or contacting Magpul support for assistance. Proper care and maintenance are key to maintaining optimal functionality.
8.3 Sight Not Folding Properly
If the Magpul MBUS Rear Sight is not folding properly, inspect for debris or dirt in the hinge mechanism. Clean the area with a soft brush or cloth to ensure smooth movement. Check that the sight arm is aligned correctly and not obstructed. Apply a small amount of lubricant to the hinge pins if they feel stiff. Ensure the sight is fully locked in the upright position before attempting to fold it. Avoid forcing the sight, as this may damage the mechanism. If the issue persists, verify that the mounting hardware is secure and properly aligned. Regular maintenance and proper storage can prevent such issues. Always refer to the manufacturer’s guidelines for detailed instructions. Proper care ensures reliable operation and longevity of the sight.
The Magpul MBUS Rear Sight offers durability, ease of use, and reliable performance, making it a top choice for shooters. Proper installation and maintenance ensure optimal functionality and accuracy, while its folding design enhances convenience. Always follow the manufacturer’s instructions for adjustments and care to maximize its lifespan and performance. Regular cleaning and lubrication of moving parts are essential for smooth operation. By adhering to these guidelines, users can enjoy consistent and precise shooting experiences with the MBUS Rear Sight.
9.1 Summary of Key Points
The Magpul MBUS Rear Sight is a reliable, lightweight accessory designed for the AR-15 platform, offering a folding design for easy storage and deployment. Its durable construction ensures long-term performance, while the dual aperture settings provide versatility for various shooting scenarios. Proper installation and adjustment are crucial for accuracy, with the windage and elevation knobs allowing precise zeroing. Regular maintenance, including cleaning and lubrication, is essential to maintain smooth operation. The sight’s compatibility with Picatinny rails and included tools make it user-friendly. By following the manufacturer’s instructions and adhering to safety guidelines, shooters can optimize the MBUS Rear Sight’s performance for consistent and accurate results in both tactical and recreational settings.
9.2 Final Tips for Optimal Performance
To maximize the performance of your Magpul MBUS Rear Sight, ensure proper installation and adjustment as outlined in the instructions. Regularly clean and lubricate moving parts to maintain smooth operation. Always store the sight in a dry, secure location to prevent damage. When zeroing, take your time to ensure accuracy, and practice proper shooting techniques. Familiarize yourself with the sight’s features, such as the dual aperture settings, to adapt to different shooting conditions. For optimal results, use the included tools for adjustments and avoid over-tightening. By following these tips and adhering to safety guidelines, you can rely on the MBUS Rear Sight for consistent and precise performance in any situation.
