The A2 fixed carry handle upper receiver remains a popular choice among AR-15 builders and enthusiasts, representing a classic and reliable design. This comprehensive guide delves into the specifics of the A2 fixed carry handle upper, exploring its features, benefits, and considerations for those looking to incorporate it into their build.
Understanding the A2 Upper Receiver
The A2 upper receiver is instantly recognizable by its integrated carry handle, which houses the rear sight. This design, initially adopted by the US military, offers a distinct aesthetic and several practical advantages. Unlike modern, flat-top uppers, the A2's integral carry handle provides a built-in, robust sighting system, eliminating the need for separate rear sights.
Key Features of the A2 Fixed Carry Handle Upper:
- Integrated Carry Handle & Rear Sight: The defining feature, providing a sturdy and reliable aiming solution. This sight is typically a windage and elevation adjustable aperture sight.
- Forward Assist: Most A2 uppers include a forward assist, allowing the user to manually assist in chambering a round if needed.
- Ejection Port Cover: Protects the ejection port from debris and the elements.
- Dust Cover: Located on the top of the receiver, further protecting internal components.
- Picatinny Rail (Optional): While traditionally lacking Picatinny rails, some manufacturers offer A2 uppers with a Picatinny rail section added to the top for mounting optics, although this deviates from the original design.
Advantages of Choosing an A2 Fixed Carry Handle Upper
The A2 upper offers several distinct advantages, particularly for specific applications:
- Simplicity and Reliability: Its straightforward design translates to exceptional reliability, with fewer moving parts compared to more modern uppers. This makes it a favored choice for those prioritizing dependability.
- Built-in Sighting System: The integrated carry handle and rear sight provide a ready-to-use sighting system, eliminating the need for separate components and reducing the overall weight of the build compared to adding a separate optic and rear sight.
- Classic Aesthetic: For many, the A2 aesthetic is iconic and represents a classic firearm design, appealing to collectors and those who appreciate its historical significance.
- Cost-Effectiveness: A2 uppers are generally less expensive than their flat-top counterparts, making them a budget-friendly option for building or upgrading an AR-15.
Considerations Before Choosing an A2 Upper
While the A2 upper offers many benefits, it's essential to consider its limitations:
- Limited Optic Mounting: The lack of a Picatinny rail on the top of the receiver severely restricts the mounting options for scopes, red dot sights, or other optics. Using a scope requires the purchase of a separate mounting system, often involving a high-mount scope ring setup.
- Sight Height: The higher sightline of the integrated carry handle may affect co-witnessing with some optics if a separate rail system is added.
- Weight: While not excessively heavy, the integrated carry handle does add some weight compared to a lightweight flat-top upper.
Conclusion: The A2 Upper's Place in the Modern AR-15 Market
The A2 fixed carry handle upper, despite its age, retains a strong position in the AR-15 market. Its reliability, simplicity, and classic design appeal to a dedicated following. While limitations regarding optic mounting exist, the A2's strengths in reliability and cost-effectiveness make it a compelling choice for shooters valuing these qualities. Whether it's the right upper for your build depends entirely on your individual needs and preferences. Careful consideration of its advantages and limitations will help you determine if the A2 fixed carry handle upper is the ideal choice for your next AR-15 project.
