Choosing the right mounting location for your red dot sight (RDS) on your AR-15 is crucial for optimal performance and accuracy. This isn't just about aesthetics; the placement directly impacts your shooting experience and overall effectiveness. This guide will delve into the various mounting options, their pros and cons, and help you determine the best spot for your AR-15.
Understanding AR-15 Mounting Options
The AR-15 platform offers several options for mounting a red dot sight, each with its advantages and disadvantages. These primarily center around the receiver, with variations in height and positioning.
1. Upper Receiver (Most Common):
This is the most popular mounting location, offering easy access and a relatively low profile. You'll typically use a Picatinny rail integrated into the upper receiver or an aftermarket rail system.
- Pros: Easy installation, relatively low profile, widely compatible with various red dots and accessories.
- Cons: Can potentially interfere with charging handle operation depending on the optic and height of the mount, especially for users with a less-than-perfect cheek weld.
2. Forward Assist:
Some shooters prefer mounting their red dot sight on the forward assist. This setup is often used in conjunction with a magnifier for longer-range shooting.
- Pros: Keeps the optic closer to the bore axis, potentially improving accuracy, and allows for easier transition between magnified and non-magnified views.
- Cons: Can make charging the weapon more difficult, and requires a specific mount designed for the forward assist, limiting compatibility.
3. Flattop Upper Receiver:
A flattop upper receiver provides a clean, uninterrupted Picatinny rail for mounting options. This is a highly versatile option.
- Pros: Maximum flexibility in optic placement and mounting accessories, allowing for co-witnessing iron sights or adding other attachments.
- Cons: Requires careful consideration of optic height and potential interference with other accessories.
Factors to Consider When Choosing a Mounting Location
Several factors influence the optimal mounting location for your red dot on your AR-15:
1. Cheek Weld and Eye Relief:
Proper cheek weld is essential for consistent accuracy. The height of your mount will directly impact this. Too high, and you'll strain your neck; too low, and you might not get a proper sight picture. Experiment with different mount heights to find what works best for you. Eye relief is also crucial; your eye needs to be properly positioned behind the optic.
2. Co-witnessing Iron Sights:
Many shooters prefer to co-witness their iron sights with their red dot. This allows for backup sighting options if your optic malfunctions. Consider a lower 1/3 co-witness mount for this purpose.
3. Intended Use:
The intended use of your AR-15 should also influence your decision. For close-quarters combat (CQB), a lower mount might be preferable. For longer-range shooting, a higher mount might offer a better sight picture.
4. Optic Size and Weight:
Larger, heavier optics will require a more robust mounting solution. Consider the weight and balance of your chosen optic when selecting a mounting location.
Finding the Perfect Mount Height
Experimentation is key. Start with a medium-height mount and adjust as needed. Consider using a riser or different height mounts to fine-tune your setup. Dry fire practice and range time are crucial to determine what works best for you.
Conclusion
Selecting the right mounting location for your red dot sight on your AR-15 is a personal choice influenced by several factors. By carefully considering these factors and experimenting with different options, you can find the ideal setup for improved accuracy and a more comfortable shooting experience. Remember to always prioritize safety and follow proper firearm handling procedures.
