The AR9 platform, using 9mm cartridges in an AR-15 style lower receiver, offers a unique blend of familiarity and versatility. One interesting variation within this platform is the side charging AR9 upper. This design moves the charging handle to the side of the receiver, offering several potential advantages and disadvantages compared to traditional top-charging uppers. This guide will explore the features, benefits, drawbacks, and considerations when choosing a side charging AR9 upper.
Understanding the Mechanics of a Side Charging AR9 Upper
The core difference between a side charging AR9 upper and a standard top-charging AR9 upper lies in the charging handle's location. Instead of operating the charging handle on the top of the receiver, the side charging system places it on the side, typically towards the rear. This seemingly small change impacts several aspects of the firearm's operation and ergonomics.
How it Works:
The side charging mechanism usually involves a modified bolt carrier group (BCG) and receiver. A lateral handle interacts with the BCG, cycling it backward to chamber a round or forward to eject a spent casing. The system's exact design varies between manufacturers, with some employing a simple lever while others incorporate more complex mechanisms for improved reliability and durability. Understanding the specific mechanism of your chosen side charging AR9 upper is crucial for proper maintenance and troubleshooting.
Advantages of a Side Charging AR9 Upper
Several advantages make side charging uppers appealing to specific users:
- Improved Accessibility: For users with certain physical limitations or preferences, a side charging handle allows for easier manipulation, particularly when using optics or accessories that might obstruct access to a top-charging handle. This is a significant advantage for left-handed shooters or those who find reaching over a scope cumbersome.
- Ambidextrous Operation: Side charging inherently allows for ambidextrous operation, benefiting both right- and left-handed shooters. This eliminates the need for specialized ambidextrous charging handles often found on traditional AR-15s.
- Reduced Optic Interference: The absence of a charging handle on the top of the receiver allows for cleaner mounting and usage of optical sights. High-magnification scopes or red dot sights can be positioned without the charging handle interfering with their operation or line of sight.
- Faster Follow-up Shots: The potential for quicker target reacquisition after a shot is another claimed benefit. By keeping the user's support hand on the grip, and simply operating the side charging handle with their shooting hand's thumb, the shooter can potentially reduce downtime. However, the actual speed difference is debatable and user-dependent.
Disadvantages of a Side Charging AR9 Upper
Despite its advantages, a side charging AR9 upper also presents some potential drawbacks:
- Increased Complexity: Side charging mechanisms often involve more complex internal components compared to top-charging systems. This can potentially lead to increased maintenance needs, higher repair costs if something malfunctions, and a slightly increased risk of malfunction if not properly maintained.
- Potential for Accidental Activation: The location of the side charging handle increases the possibility of accidental activation during use, especially if the firearm is bumped or jostled. Proper training and safe handling practices are absolutely paramount.
- Limited Availability: Compared to standard top-charging AR9 uppers, side charging options might have a smaller selection, potentially affecting customization options and availability. Furthermore, finding replacement parts may require more searching.
- Cost: Side charging uppers often come with a higher price tag compared to their top-charging counterparts due to the more complex manufacturing processes and design.
Choosing the Right Side Charging AR9 Upper
Selecting the appropriate side charging AR9 upper depends on individual needs and preferences. Consider the following factors:
- Manufacturer Reputation: Opt for reputable manufacturers with a proven track record of producing reliable firearms and components. Research reviews and user feedback to ensure quality and reliability.
- Material and Construction: Examine the materials used in the upper receiver and BCG, prioritizing robust and durable materials capable of withstanding consistent use. High-quality materials contribute to reliability and longevity.
- Compatibility: Ensure compatibility with your existing AR-15 lower receiver and other components. Not all side charging uppers are created equal, and compatibility is crucial.
- Ergonomics: Evaluate the ergonomics of the side charging handle. Does it feel comfortable and intuitive to operate? A well-designed handle should be easy to reach and manipulate without hindering other operations.
Conclusion: Weighing the Pros and Cons
The side charging AR9 upper presents a unique alternative to the standard top-charging design. While offering advantages like improved accessibility and reduced optic interference, it also introduces potential drawbacks such as increased complexity and potential for accidental activation. Carefully weighing these advantages and disadvantages, along with considering personal preferences and intended use, is crucial in determining if a side charging AR9 upper is the right choice for your specific needs. Always prioritize safety and proper training when using any firearm.