Introduction
In the heat of a critical situation, when every fraction of a second counts, the performance of your firearm can hinge on the reliability of your sighting system. Imagine the frustration, even the danger, of an optic suddenly failing. Now, think about the peace of mind that comes with knowing you have a dependable backup readily available. That’s where the often-underestimated, yet absolutely essential, best back up iron sights come into play. They’re more than just a secondary option; they are your tactical insurance policy, ensuring you can maintain accurate shot placement when your primary sight fails.
The role of back up iron sights (BUIS) is straightforward: provide a secondary aiming system in the event of a malfunction or failure with your primary optic, such as a red dot sight, holographic sight, or magnified scope. BUIS offer an immediate and reliable alternative, ensuring you can continue engaging targets with precision. They are also critical when the primary sighting system is damaged or when the battery for the electronic sight is dead.
This article will serve as your comprehensive guide to understanding, selecting, and using the best back up iron sights available today. We’ll delve into the different types, explore the crucial factors to consider when making your selection, provide reviews of some top-performing models, and walk you through the installation and zeroing process. Our goal is to equip you with the knowledge needed to choose the right BUIS for your needs and to ensure you are prepared for any situation. We’ll keep the focus on those best back up iron sights throughout, ensuring you understand the importance of these essential accessories.
Types of Back Up Iron Sights
The world of back up iron sights offers a variety of designs, each with its own advantages and drawbacks. Understanding these different types is essential to making an informed decision about what will work best for your specific firearm and intended use.
Fixed Iron Sights
Fixed iron sights represent the classic, time-tested design. These sights are permanently attached to your firearm, ready to go at a moment’s notice. They are incredibly reliable, as they have no moving parts that could fail, and they’re always available without requiring any deployment or adjustment. This constant readiness is a significant advantage.
However, fixed sights also present certain considerations. They can sometimes obstruct the sight picture of your primary optic, especially if you’re using a low-profile optic. Furthermore, if you have a magnified optic, the fixed iron sights might not be ideal for fast target acquisition at longer distances. The fixed nature of these sights can also limit flexibility in adapting to different shooting scenarios.
Folding Iron Sights
Folding iron sights offer a low-profile solution, minimizing the obstruction of your primary optic’s view when not in use. These sights can be quickly flipped up into position when needed, providing a readily available backup. The ability to tuck them away when not required makes them a popular choice, especially for shooters who prefer a clean sight picture.
While convenient, folding sights can potentially be more vulnerable to damage, as they have moving parts that are exposed. There’s also a slight chance they could snag on gear or clothing. The overall reliability of these sights can vary depending on the manufacturer and design, so choosing a reputable brand with durable materials is key.
Offset Iron Sights
Offset iron sights take a different approach, positioning the iron sights at a forty-five-degree angle to your primary optic. This arrangement allows for a rapid transition from your primary sight to the backup irons without the need to significantly adjust your grip or head position. This can be particularly beneficial in tactical environments where rapid target acquisition is essential.
Offset sights offer a unique and efficient way to switch between sighting systems, but they also have drawbacks. Transitioning to them can take a little practice to become natural. Some shooters may find that the angle of the sights interferes with their preferred shooting style. Choosing the correct offset angle is key to ensuring comfortable and efficient use.
Factors to Consider When Choosing BUIS
Selecting the right back up iron sights requires careful consideration of several key factors. These factors influence the sights’ durability, ease of use, and compatibility with your firearm and shooting style.
Material Choices
The materials used in BUIS construction significantly impact their durability and weight. Steel offers exceptional strength and resistance to impacts, making it a top choice for rugged applications. However, steel sights can be heavier. Aluminum alloy, especially aircraft-grade aluminum, provides a balance of durability and weight reduction. High-quality aluminum sights are often a great choice for many shooters. Consider the material’s properties based on how the firearm will be used.
Mounting Systems
A secure and robust mounting system is absolutely crucial. Ensure the BUIS you select are compatible with your firearm’s rail system. Picatinny rails are the most common standard. The sights must mount securely and maintain their zero even after repeated use and exposure to harsh conditions. Loose or improperly mounted sights are entirely useless.
Sight Picture and Design
The sight picture and design significantly influence how quickly and accurately you can acquire your target. The front sight post can be standard or hooded. The rear sight aperture’s size influences the amount of light entering the system. Smaller apertures offer greater precision, while larger apertures are better for fast target acquisition. Selecting the sight picture that fits your shooting style and eye preference is essential.
Sight Height
The height of your iron sights is critical to consider, especially when co-witnessing with a red dot sight or other optics. A properly aligned sight will ensure your iron sights are visible through the sight of your optic or that the optic is aligned with the iron sights. Two common co-witnessing configurations are absolute co-witness (iron sights and the red dot align perfectly) and lower one-third co-witness (iron sights are visible at the bottom of the red dot sight).
Durability Considerations
BUIS must withstand the rigors of use, including impacts, moisture, and extreme temperatures. Look for sights made from robust materials with protective finishes. Consider how your firearm will be used and the types of environments you expect to encounter.
Ease of Use
Ease of adjustment and deployment is vital. BUIS should be easy to install and zero. They should also deploy quickly and smoothly when needed. Choose sights that are intuitive to use and have clear markings.
Cost and Value
The price of BUIS can vary significantly, from budget-friendly options to more expensive models. Consider your budget and the features you need. The best choice involves finding a sight that provides the best value for your money, balancing performance, features, and durability.
Top-Rated Back Up Iron Sights: Reviews and Recommendations
This section provides reviews and recommendations on popular and highly-regarded back up iron sights, helping you compare their features and performance.
Name: Magpul MBUS (Magpul Back Up Sight)
Overview: The Magpul MBUS is a widely popular and affordable folding BUIS. It’s known for its lightweight design and ease of use.
Key Features and Specs: Polymer construction, spring-loaded flip-up design, adjustable rear sight.
Pros: Lightweight, affordable, durable polymer, and a well-earned reputation for reliability. Easy to deploy and use.
Cons: Polymer construction may not be as durable as steel or aluminum under very heavy use.
User Experience/Performance: The MBUS is a reliable and effective backup sight, making it a great choice for various firearms.
Price and Availability: Widely available and relatively inexpensive.
Overall Rating/Recommendation: Excellent value for the price, a great option for many shooters.
Name: Troy Industries BUIS
Overview: Troy Industries offers high-quality iron sights that are popular for their robust construction and excellent sight picture. Available in both fixed and folding versions.
Key Features and Specs: CNC machined from aircraft-grade aluminum, spring-loaded folding design, available with various sight post and aperture options.
Pros: Very durable, high-quality materials, excellent sight picture, fast target acquisition.
Cons: More expensive than some other options, some versions can be bulky.
User Experience/Performance: These are premium sights known for their accuracy and reliability, offering a superior experience.
Price and Availability: Available at a mid to high price point, widely available.
Overall Rating/Recommendation: A top-tier choice for serious shooters who demand the best.
Name: Midwest Industries Combat Rifle Sights
Overview: Midwest Industries offers a range of BUIS known for their high quality and user-friendly designs.
Key Features and Specs: Machined from durable materials, easy to adjust, and available in both fixed and folding versions.
Pros: Durable, easy to use, clear sight picture.
Cons: May be slightly more expensive than some polymer options.
User Experience/Performance: These sights provide excellent performance and a positive user experience.
Price and Availability: Moderately priced and readily available.
Overall Rating/Recommendation: Another great option for reliability and value.
How to Install and Zero Your BUIS
Proper installation and zeroing are essential for the effectiveness of your best back up iron sights.
Installing the BUIS:
1. Ensure your firearm is unloaded and the chamber is clear.
2. Locate the mounting slots on your Picatinny rail.
3. Position the rear sight in the rearmost slot and the front sight as far forward as possible.
4. Tighten the mounting screws securely, following the manufacturer’s recommendations.
Zeroing the BUIS:
1. Place a target at a known distance, typically 25 or 50 yards.
2. Rest your firearm on a stable surface, such as a bench.
3. Aim at the target and fire a group of three to five shots.
4. Observe where your shots are hitting on the target.
5. Adjust the rear sight’s windage (left/right) and elevation (up/down) until your shots consistently hit the point of aim.
6. Repeat the process as needed until you achieve a consistent zero.
Tips for Maintenance and Care:
Regularly inspect your BUIS for damage or loose screws.
Clean the sights with a soft cloth and mild cleaner, as needed.
Ensure the sights are kept free of dirt, debris, and any obstructions.
Conclusion
The best back up iron sights are a critical component of a well-equipped firearm. They offer a reliable alternative to your primary optic and are a valuable tool for firearm safety and the ability to make accurate shots.
When choosing BUIS, carefully consider the type, materials, mounting system, sight picture, durability, and cost. Look at different model reviews before making your final choice.
You’ve reviewed a few of the top models. Magpul MBUS offers excellent value, while Troy Industries provides top-tier performance. Midwest Industries offers a solid balance of quality and value.
Take the time to research the best back up iron sights for your needs. With the right choice, you’ll have the confidence to handle any situation and maintain your accuracy.
