Why Use an AR-15 Riser Mount?
Improved Cheek Weld
A good cheek weld, the contact between your cheek and the stock, is paramount for consistent shot placement and reduced fatigue. Without a proper cheek weld, you may struggle to quickly acquire a good sight picture and maintain proper eye relief. Riser mounts help you achieve a better cheek weld by positioning your head at a more natural and comfortable height in relation to your optic. This allows for a more repeatable and consistent shooting position, crucial for accuracy.
Better Sight Picture
When your optic is mounted at the correct height, it positions the sight picture at a more natural eye level. This translates to faster target acquisition and enhanced situational awareness. Instead of craning your neck or tilting your head to look through the optic, you can maintain a more upright posture, allowing for a wider field of view and quicker transitions between targets.
Compatibility with Optics
Certain optics are designed to work optimally with a raised mounting system. For instance, many red dot sights are designed to be co-witnessed with iron sights at the standard height, or raised to a specific height like the 1.93″ height for a better view of the target. Also, magnifiers, which are often paired with red dot sights, commonly require a riser to align the magnifier’s center with the red dot’s. Using a riser ensures that these optics function correctly and provide a clear and aligned sight picture.
Key Factors to Consider When Choosing an AR-15 Riser Mount
Height or Rise
The most crucial factor when choosing a riser mount is the height, or rise, it provides. This determines how much the optic is elevated above the top rail of your AR-15. Common heights include:
- Absolute Co-Witness: This height aligns the center of your optic with the center of your iron sights.
- 1/3 Co-Witness: The optic is slightly higher than absolute co-witness, allowing a portion of the iron sights to be visible in the lower third of your sight picture.
- 1.93″ Height: Commonly chosen for enhanced comfort and faster target acquisition with red dots. Allows a head-up shooting posture, especially beneficial for those wearing plate carriers or other gear.
- 2.26″ and higher: Commonly used for night vision devices.
The ideal height depends on your personal preferences, the type of optic you’re using, and how you plan to use your AR-15. Experimentation might be needed to determine the most comfortable and effective height for your individual needs.
Material and Construction
The material and construction of a riser mount directly impact its durability and reliability. High-quality riser mounts are typically constructed from robust materials like aircraft-grade aluminum (6061 or 7075) or steel. Aluminum offers a great balance of strength and weight, while steel is exceptionally durable.
Look for riser mounts that have undergone rigorous testing and are designed to withstand the rigors of use. Coatings, such as hard anodizing, add an extra layer of protection against scratches, corrosion, and wear, while also enhancing the aesthetics of the mount.
Mounting System
The mounting system is how the riser attaches to your AR-15’s Picatinny rail. Most modern riser mounts are designed to interface with a standard Picatinny rail.
There are two primary mounting styles:
- Bolt-On: This style is typically more secure and requires the use of a wrench to tighten them. They provide a very stable and are less prone to movement.
- Quick Detach: Quick-detach mounts allow you to quickly remove and reattach your optic without tools. This is beneficial if you need to quickly transition between different optics or clear a malfunction. The main tradeoff is reliability. Make sure that the quick detach system is made with high quality materials.
Consider your specific needs and preferences when choosing a mounting system. If you prioritize security and don’t mind using tools, a bolt-on system is a good choice. If you need the flexibility to quickly remove and reattach your optic, a quality quick-detach system is a better option.
Weight
The weight of your AR-15 is a significant factor, especially when it comes to comfort and maneuverability. Choose a riser mount that strikes a balance between durability and weight. Lightweight aluminum mounts are often preferred, as they provide excellent strength without adding excessive bulk. Every ounce adds up, so consider the overall weight of your rifle when selecting a riser mount.
Compatibility
Consider the optic and any accessories you plan to use with your AR-15. Ensure that the riser mount is compatible with your optic’s mounting footprint and height requirements. Consider the height and offset as well. If you plan on using a magnifier, make sure the riser mount provides enough room for it.
Budget
AR-15 riser mounts range in price, from relatively inexpensive options to more premium models. Determine your budget beforehand and consider what features are most important to you. While a high-quality, premium mount can offer superior features and durability, there are plenty of budget-friendly options that provide excellent value and performance.
Top Recommendations for AR-15 Riser Mounts
Overall Top Pick
The best overall AR-15 riser mount is known for its exceptional build quality, sleek design, and ease of use. Constructed from lightweight, high-strength aluminum, this mount offers outstanding durability and performance. Key features include a quick-detach mechanism for rapid optic removal, multiple height options to accommodate various shooting styles and optics, and a low-profile design to minimize snagging.
Pros:
- Incredibly strong and well-built.
- Quick detach system that works smoothly.
- Multiple height options for versatility.
Cons:
- Higher price point compared to some other options.
Budget Friendly Choice
For shooters on a budget, this option is an excellent choice. Constructed from lightweight aluminum, it offers a good blend of features and value. It’s known for its reliability, ease of installation, and its affordable price.
Pros:
- Very Affordable.
- Simple design and easy to use.
Cons:
- Material may not be as durable.
For Magnifiers
This riser mount is specifically designed for pairing with magnifiers. Its clever design provides an optimal height for red dot sights and offers a solid platform for a magnifier to align perfectly with the red dot. It is constructed from durable materials, providing the necessary stability for reliable performance.
Pros:
- Designed for use with magnifiers.
- Durable build.
Cons:
- May not be suitable for all optics.
Heavy-Duty / Tactical Option
This option is designed for hard use. Built with robust materials, it’s engineered to withstand the rigors of tactical operations and demanding environments. Known for its exceptional durability and reliable performance under pressure.
Pros:
- Extremely durable and reliable.
- Suitable for heavy-duty use.
Cons:
- Heavier than other options.
Installation and Use
Installing an AR-15 riser mount is a straightforward process, typically involving a few simple steps:
- Ensure your rifle is unloaded and the safety is engaged.
- Clean the Picatinny rail on your AR-15.
- Loosen the mounting bolts on the riser mount (if applicable).
- Align the riser mount on the rail.
- Tighten the mounting bolts securely, using the recommended torque specifications.
- Mount your optic onto the riser mount, following the optic manufacturer’s instructions.
- Once your optic is mounted on the riser, you will then need to zero your optic by sighting it in.
Always refer to the manufacturer’s instructions for specific installation and usage details.
Maintenance and Care
Maintaining your AR-15 riser mount is critical to ensuring its longevity and continued performance. Regularly inspect the mount for any signs of wear or damage. Clean the mount periodically with a soft cloth and mild cleaning solution. Check the mounting screws for tightness, and tighten them as necessary. With proper care, your riser mount will continue to enhance your shooting experience for years.
Conclusion
The AR-15 riser mount, while often overlooked, can be a game-changer for comfort, accuracy, and speed. By carefully considering the factors discussed in this article, you can confidently select the best AR-15 riser mount to meet your specific needs and preferences. Whether you prioritize a perfect cheek weld, a better sight picture, or compatibility with specific optics, the right riser mount will elevate your shooting experience.
Remember that finding the perfect mount involves experimentation and a willingness to try different heights and styles to see what works best for you.
