Technology
The AR-18 and AR-15: A Comprehensive Guide to Their Differences
The AR-18 and AR-15: A Comprehensive Guide to Their Differences
The AR-18 and the AR-15 are both variations of the popular ArmaLite platform, but they differ in several key aspects. This article will delve into these differences, explaining the unique features and design choices of each model.Overview of AR-18 and AR-15
The AR-18 and the AR-15 are two distinct systems, each with its own set of characteristics. The AR-18 was developed as a more cost-effective and compact alternative to the AR-15. While the AR-15 uses forged parts, the AR-18 is built using stamped steel components, making it a more budget-friendly option. Additionally, the AR-18 has a more conventional operating system—it uses a piston-driven short stroke mechanism, as opposed to the direct impingement system used in the AR-15.AR-18 vs. AR-15: Key Differences
Design and Manufacturing: The AR-18 was designed by Armalite after the AR-15 intellectual property was sold to Colt. Armalite aimed to create a rifle that would be more appealing to the export market, resembling the FN-FAL design. One of the most noticeable differences is the location of the charging handle on the left side of the rifle, non-ejection side.
In contrast, the AR-15 is a more complex and expensive firearm to manufacture. It requires expensive alloys and machining, unlike the AR-18, which uses stamped steel components, making it more affordable.
Operational Systems: The AR-18 is piston-driven, which means it has a more traditional guide rod and return spring arrangement. This setup eliminates the need for a spring behind the bolt carrier, resulting in a shorter operating package. The AR-18 also has a foldable stock, a feature that enhances both portability and comfort. The stamped steel receiver further contributes to its affordability.
The AR-15, on the other hand, uses a direct impingement system. This design does not require a guide rod but necessitates a longer return spring behind the bolt carrier group. As a result, the action is longer, and the stock cannot be folded. The AR-15 has an aluminum receiver, which makes it lighter compared to the AR-18's steel receiver.
Legal and Regulatory Differences
AR-18: The AR-18 model, in semi-automatic civilian trim, was developed as a folding stock, less expensive alternative to the AR-15. It was never adopted by any military, although it was licensed to England and Japan, influencing many future designs. This gun has a select fire capability, which distinguishes it from the standard AR-15, which is generally considered for civilian use and without the select fire mode.
AR-15: The AR-15 is primarily used in civilian and military contexts. Depending on the configuration, it can be semi-automatic or selective fire, but this depends on the legal regulations of the country or jurisdiction. The AR-15 is also known for its versatility and reliability in various applications.