The AR-15 platform's modularity is a significant draw for many shooters. One often-overlooked aspect of this customization is the availability of left-hand ejection (LHE) upper receivers. These uppers offer a distinct advantage for left-handed shooters, mitigating the common issues of hot brass to the face. This guide dives deep into the world of left-hand eject AR uppers, addressing common questions and concerns.
What is a Left-Hand Eject AR Upper?
A left-hand eject AR upper receiver is designed to expel spent cartridge casings to the left side of the weapon, rather than the traditional right. This simple change dramatically improves the shooting experience for left-handed shooters, eliminating the discomfort and potential injury caused by hot brass impacting the face and neck. The modification is primarily achieved through alterations to the bolt carrier group (BCG) and ejection port. It's important to note that simply switching the BCG isn't enough; the upper receiver itself needs to be designed for left-hand ejection.
How Does a Left-Hand Eject Upper Work?
The mechanism is essentially mirrored compared to a standard right-hand ejection system. The BCG's ejection system components are strategically positioned and often modified to direct the spent casing to the left. The ejection port, too, is usually modified to facilitate this leftward ejection. This isn't merely a simple flip; it often involves more complex machining to maintain reliability and prevent malfunctions.
Are Left-Hand Eject Uppers Reliable?
The reliability of a left-hand eject upper depends heavily on the manufacturer. Reputable manufacturers employ high-quality machining and precision engineering to ensure their LHE uppers function flawlessly. While early LHE uppers sometimes had reliability issues, modern designs largely address these concerns. Choosing a reputable brand is critical to ensuring reliable performance. However, even with high-quality parts, occasional malfunctions can still occur, just as with standard right-hand ejection systems.
What are the Benefits of a Left-Hand Eject AR Upper?
- Comfort and Safety for Left-Handed Shooters: This is the primary benefit. Hot brass to the face is a common complaint among left-handed shooters using standard AR-15s. LHE uppers eliminate this problem.
- Improved Shooting Experience: Without the distraction and discomfort of hot brass, left-handed shooters can maintain better focus and accuracy.
- Enhanced Safety: Eliminating hot brass to the face directly improves safety, particularly in close-quarters situations.
What are the Drawbacks of a Left-Hand Eject AR Upper?
- Cost: LHE uppers are generally more expensive than standard uppers due to the specialized manufacturing processes required.
- Availability: They are not as readily available as standard uppers, potentially limiting your choices.
- Potential for Malfunctions (with low-quality brands): As mentioned, using a poorly made LHE upper can lead to malfunctions.
Do I Need a Specific BCG for a Left-Hand Eject Upper?
Yes. While some claim to use a standard BCG in a LHE upper, this is generally unreliable and not recommended. A left-hand eject BCG is designed to work in conjunction with the modified ejection port of the LHE upper receiver, ensuring proper ejection. Using an incompatible BCG will likely lead to malfunctions and potential damage.
Can I Convert a Right-Hand Eject Upper to Left-Hand Eject?
No. Converting a right-hand eject upper to a left-hand eject is not feasible. It's not merely a matter of swapping parts; the receiver's ejection port and often the bolt carrier group require significant modifications. Attempting this conversion could permanently damage the upper receiver.
Are there different types of Left-Hand Eject AR Uppers?
Yes, like standard AR uppers, left-hand eject uppers come in various configurations, including different barrel lengths, materials, and finishes. Consider your specific needs and preferences when choosing one.
This comprehensive guide provides a detailed overview of left-hand eject AR uppers. Remember, always choose reputable manufacturers to ensure reliability and performance. Happy shooting!