Building your own AR-9 pistol or rifle can be a rewarding experience, offering a high degree of customization and often a lower cost than buying a complete firearm. One popular approach is purchasing an "AR-9 kit minus lower," which provides all the necessary upper receiver components without the lower receiver. This guide will explore the benefits of this approach, the components included, and what you need to consider before embarking on this project.
Understanding the AR-9 Kit Minus Lower
An AR-9 kit minus lower encompasses all the parts necessary to build the upper receiver of a 9mm AR-15 style firearm. This excludes the lower receiver, which is typically purchased separately and requires its own background check and registration. This separation allows for greater flexibility and potentially simplifies the legal aspects of ownership, depending on your location. Always check your local and state laws regarding firearms assembly and ownership before proceeding.
Components Typically Included in an AR-9 Kit Minus Lower
A typical AR-9 kit minus lower will usually include the following components:
- Upper Receiver: The main housing for the bolt carrier group and barrel.
- Bolt Carrier Group (BCG): The heart of the firearm's operating system, containing the bolt and components that cycle the action. 9mm BCGs are specifically designed for 9mm cartridges and are not interchangeable with .223/5.56 BCGs.
- Barrel: The barrel dictates the accuracy and overall performance of the firearm. Lengths vary depending on preference and legal requirements (e.g., pistol vs. rifle). Consider factors like barrel length, twist rate, and material when choosing a barrel.
- Handguard: Protects the barrel and provides a place to attach accessories like lights, lasers, or vertical grips. Materials range from aluminum to polymer, each with its own advantages and disadvantages.
- Charging Handle: Used to manually cycle the bolt.
- Ejection Port Cover: Prevents debris from entering the ejection port.
- Forward Assist (Optional): Helps to ensure the bolt is fully locked into battery. Not all AR-9 uppers include this.
- Gas Block/Tube (May be integrated or separate): Directs gas from the barrel to cycle the BCG in blowback or gas-operated systems. Blowback systems usually don't use a gas tube.
Choosing Your AR-9 Kit Minus Lower: Key Considerations
When selecting an AR-9 kit minus lower, several factors deserve careful consideration:
- Brand Reputation: Opt for reputable manufacturers with a proven track record of producing high-quality components.
- Compatibility: Ensure all components are compatible with each other and with your chosen lower receiver.
- Material Quality: Examine the materials used in construction, prioritizing durable and reliable options. Consider the type of finish on the components and whether it's appropriate for your intended use.
- Price vs. Quality: Balance cost with the overall quality and durability of the kit. While cheaper options exist, they may compromise performance and longevity.
Building Your AR-9: Tools and Skills Required
Building an AR-9 requires careful assembly and the use of appropriate tools. While detailed instructions are typically included with most kits, prior experience with firearms assembly is highly recommended. If you lack this experience, seeking guidance from a qualified gunsmith is crucial. Necessary tools often include punches, a torque wrench, and possibly a vise block. Improper assembly can lead to malfunctions and potential safety hazards.
Conclusion
Constructing an AR-9 from a kit minus lower can provide a highly customizable and potentially cost-effective way to acquire a 9mm AR-style firearm. However, it's vital to proceed with caution, ensuring you understand the process, possess the necessary skills, and comply with all applicable laws and regulations. Thorough research, careful planning, and a commitment to safety are paramount. Remember to always practice safe firearm handling and storage.
