Enhance Your Precision: The Magpul MBUS Gen 2 Flip-Up Rear Sight in Flat Dark Earth

For serious shooters, tactical professionals, and firearm enthusiasts, establishing a reliable aiming system is paramount. While modern optics like red dot sights and scopes offer incredible advantages, the importance of a robust, dependable backup sighting system cannot be overstated. This is where the Magpul MBUS Gen 2 Flip-Up Rear Sight shines, offering an essential layer of reliability and readiness for any AR-pattern rifle or similar platform. Available in the popular Flat Dark Earth (FDE) finish, this sight is not just an accessory; it's a critical component designed to ensure your firearm remains operational and accurate, even if your primary optic fails.

Why Choose the Magpul MBUS Gen 2 Rear Sight?

In scenarios ranging from competitive shooting to home defense, the ability to quickly transition to a backup sighting solution can mean the difference between success and failure. The Magpul MBUS Gen 2 is engineered precisely for these moments, providing a lightweight, durable, and highly functional solution. But what makes it a top choice for so many?

• Unwavering Reliability: Built to withstand the rigors of real-world use, this sight offers a dependable aiming point when your primary optic is compromised or batteries die.
• Rapid Deployment: Its spring-loaded design allows for instantaneous flip-up action, ensuring you can acquire your target without fumbling.
• Seamless Integration: Designed to perfectly complement AR-15, AR-10, DPMS-LR308, and other MIL-STD-1913 Picatinny/STANAG 4694 rail-equipped weapons, it maintains the familiar A2 sight height-over-bore.
• Lightweight Durability: Crafted from Magpul's proprietary impact-resistant polymer, it adds minimal weight to your rifle while offering exceptional strength against drops, bumps, and operational abuse.
• Precision Adjustment: Fine-tune your aim with intuitive windage adjustments, ensuring accuracy across various distances and conditions.

Whether you're building a new rifle, upgrading an existing one, or simply seeking enhanced preparedness, the Magpul MBUS Gen 2 Flip-Up Rear Sight provides the peace of mind that comes with a high-quality, American-made product.

Designed for Performance: Key Features Explained

The ingenuity behind the Magpul MBUS Gen 2 Rear Sight lies in its thoughtful design and robust material selection. Every feature is meticulously engineered to provide maximum utility and resilience.

Impact-Resistant Polymer Construction

• Lightweight Advantage: At an astonishingly low overall weight of just 1.3 ounces, the MBUS Gen 2 ensures your rifle remains agile and prevents unnecessary bulk. This is particularly crucial for shooters who spend extended periods with their firearms or are mindful of overall system weight for tactical applications.
• Operational Durability: Don't let the "polymer" fool you. Magpul's proprietary polymer blend is specifically formulated to resist significant impact, extreme temperatures, and general wear and tear that can occur in demanding environments. This material choice allows the sight to absorb shocks that might deform or damage sights made from less resilient materials, maintaining its zero and structural integrity. It's built to withstand the knocks and drops that inevitably happen in the field or on the range.

Spring-Loaded Flip-Up Mechanism

• Ambidextrous Activation: The spring-loaded mechanism allows for swift deployment from either side of the sight or by simply pressing the top. This ambidextrous capability ensures quick activation regardless of your dominant hand or shooting position.
• Positive Lock-Up: A robust detent and spring pressure securely hold the sight in the erect position, providing a stable and consistent aiming platform. This positive lock-up prevents accidental folding during active use, ensuring your sight remains ready when you need it.
• Unobstructed Folding: Despite its firm lock-up, the design intelligently permits unobstructed folding under direct impact. This is a crucial safety and durability feature, as it allows the sight to give way if it takes a hard hit, preventing damage to the sight itself or the rail it's mounted on, and ensuring it doesn't snag on gear. Once the impact passes, it can be easily flipped back up.

MIL-STD-1913 Picatinny/STANAG 4694 Rail Compatibility

• Universal Fit: The MBUS Gen 2 is designed to clamp securely onto any MIL-STD-1913 Picatinny or STANAG 4694 receiver rail. This widespread standard means it's compatible with a vast array of modern sporting rifles, carbines, and even some shotguns that feature this rail system.
• Standard A2 Height: When deployed, the sight provides the same height-over-bore as standard A2 iron sights. This is a significant advantage as it ensures a consistent and familiar cheek weld and sight picture, making the transition between primary optics and backup irons seamless for users accustomed to standard AR ergonomics. This consistency reduces training time and increases readiness.

Protective Wings and Dual Apertures

• Aperture Protection: The sight features protective wings that shield the dual, same-plane flip apertures. These wings act as a barrier against accidental impacts, ensuring the delicate apertures remain functional and free from debris or damage. This design element is vital for maintaining the sight's reliability in rugged conditions.
• Versatile Aiming: The dual aperture system offers both a large and a small peep hole. The large aperture is ideal for rapid target acquisition in close quarters or low-light conditions, providing a wider field of view. The smaller aperture, conversely, offers greater precision for more distant shots or when maximum accuracy is required.
• Operational Flexibility: A key convenience feature is that the sight can still be folded with either the large or small aperture in the deployed position. This means you don't need to switch apertures before stowing the sight, saving precious seconds and simplifying operation.

Effortless Windage Adjustment

• Precision and Simplicity: Windage adjustments are made easily and positively via a detent knob. This knob provides tactile clicks, allowing for precise adjustments without the need for special tools. Users can quickly zero their sight for different ammunition types or environmental conditions, ensuring optimal accuracy.
• Secure Zero: The positive detents ensure that once an adjustment is made, the windage setting holds firm, resisting accidental changes during recoil or handling.

Real-World Applications and User Scenarios

The versatility and reliability of the Magpul MBUS Gen 2 Rear Sight make it an invaluable addition to a multitude of setups and user profiles.

• AR-15/M16 Platforms: As specifically tailored for the AR-15/M16 platform, it’s an ideal choice for recreational shooters, tactical training, and defensive setups where a reliable backup is paramount. Many users choose to run these sights co-witnessed with a red dot optic, providing immediate access to iron sights through the optic's window.
• Home Defense: In a high-stress home defense scenario, an optic failure could be catastrophic. Having instantly deployable iron sights like the MBUS Gen 2 ensures you maintain a vital aiming capability, even in the dark or under duress.
• Competitive Shooting: While primary optics dominate competition, an unexpected malfunction or damage to an optic can end a match. A quick flip of the MBUS sights can keep you in the game, allowing you to complete stages with a reliable aiming solution.
• Hunting: For hunters using AR-pattern rifles, especially in areas with dense brush or challenging terrain, the MBUS sights offer a durable and reliable backup if an optic is damaged or obstructed, ensuring the hunt isn't cut short.
• Preppers and Survivalists: For those preparing for contingencies, the lightweight, robust, and no-battery-required nature of the MBUS Gen 2 sights makes them an indispensable part of a reliable rifle setup. They ensure fundamental aiming capability regardless of power grid status or battery availability.
• Training and Drills: Running drills that simulate optic failure is a crucial part of training. The MBUS Gen 2 allows for seamless transitions to backup sights, reinforcing fundamental marksmanship skills.

A Mark of Quality: Made in the USA

The Magpul MBUS Gen 2 Flip-Up Rear Sight proudly bears the "Made in the USA" stamp. This signifies not just local manufacturing, but a commitment to stringent quality control, superior materials, and innovative design. Choosing American-made products often means supporting higher manufacturing standards and contributing to domestic industries, ensuring a product that meets the expectations of discerning shooters worldwide. Magpul's reputation for innovation and quality is directly tied to their dedication to designing and producing their products within the United States.

The Flat Dark Earth Advantage

The Flat Dark Earth (FDE) finish is more than just a color; it’s a popular tactical choice. FDE offers several benefits:

• Environmental Blending: It provides excellent camouflage in arid, desert, and some wooded environments, breaking up the silhouette of the rifle.
• Reduced Heat Signature: Lighter colors like FDE can absorb less heat from direct sunlight compared to black, potentially keeping components cooler during prolonged exposure.
• Aesthetic Appeal: Many shooters prefer the modern, distinctive look of FDE, allowing for a personalized and cohesive rifle build when paired with other FDE accessories.

The FDE finish on the Magpul MBUS Gen 2 Rear Sight is an integral part of its design, offering both practical and aesthetic advantages for a wide range of users and environments.

Setting Up Your Magpul MBUS Gen 2 Rear Sight

Installation of the Magpul MBUS Gen 2 Rear Sight is straightforward, thanks to its intuitive clamping mechanism. It attaches directly to any MIL-STD-1913 Picatinny rail section on your rifle's upper receiver. Ensure the sight is placed far enough forward to allow for comfortable eye relief while still leaving room for a primary optic. Once mounted, the detent knob on the side allows for easy windage adjustment. For elevation, the front sight (not included with this rear sight) would be adjusted. Proper zeroing is crucial and should be performed at a designated range following standard marksmanship principles.

Frequently Asked Questions

Question	Answer
Is this sight suitable for my AR-15?	Absolutely. The Magpul MBUS Gen 2 Rear Sight is specifically tailored for the AR-15/M16 platform, providing the correct height-over-bore for seamless integration and a familiar sight picture. It fits all MIL-STD-1913 Picatinny rail-equipped AR-15s.
Can it be used with a red dot sight?	Yes, it is commonly used as a backup sight alongside red dot optics. Depending on your optic mount height, you can achieve either a lower 1/3 co-witness or an absolute co-witness, allowing you to use your iron sights through your red dot in case of optic failure.
How durable is the polymer construction?	Magpul's proprietary polymer is engineered for extreme impact resistance and durability in demanding operational environments. It’s lightweight yet robust, designed to withstand drops, temperature fluctuations, and significant operational abuse without compromising functionality. It's built to last through rigorous use.
How do I adjust for windage?	Windage adjustments are made easily via the detent knob located on the side of the sight. Simply rotate the knob left or right to move your point of impact. Each click provides a precise adjustment, typically 0.5 MOA per click, allowing for fine-tuning your zero without special tools.
What is the benefit of dual apertures?	The dual apertures (large and small) offer versatility. The large aperture is for rapid target acquisition and close-quarters engagements, providing a wider field of view. The small aperture is for more precise aiming at longer distances, offering a sharper sight picture. You can quickly switch between them based on the scenario.
Where can I purchase this authentic Magpul product?	The authentic Magpul MBUS Gen 2 Flip-Up Rear Sight (UPC: 873750004365) is available through reputable firearms retailers like DEGuns. Ensure you purchase from authorized dealers to guarantee authenticity and receive full warranty support.
Does it come with a front sight?	No, this specific product (UPC: 873750004365) is the rear sight only. A compatible Magpul MBUS Gen 2 Front Sight (sold separately) is required to complete your iron sight system and allow for elevation adjustments.
What does "height-over-bore as standard A2 irons" mean?	This means that when deployed, the MBUS Gen 2 Rear Sight sits at the same height above the rifle's bore (barrel) as the standard, fixed A2 style iron sights found on many AR-15/M16 rifles. This ensures that your cheek weld and sight picture remain consistent and familiar, simplifying the transition between different sighting systems.

Specifications Overview

Feature	Detail	Measurement (Approx.)
Product Name	Magpul MBUS Gen 2 Flip-Up Rear Sight	N/A
Material	Impact-Resistant Polymer	N/A
Finish	Flat Dark Earth (FDE)	N/A
Weight	Overall Weight	1.3 oz
Height Stowed	Overall Height Stowed	0.51"
Length Stowed	Overall Length Stowed	2.6"
Aperture to Rail	Center of Aperture to top of rail	1.42"
Compatibility	MIL-STD-1913 Picatinny/STANAG 4694 Rail	AR-15, AR-10, DPMS-LR308
Windage	Detent Knob Adjustable	N/A
Apertures	Dual, Same Plane Flip	Large & Small
Manufacturing	Made in the USA	N/A
SKU	MAG248-FDE	N/A
UPC		873750004365