AR-9 Super Lower V1.2

AR-9 Super Lower V1.2 Features

The AR-9 Super Lower V1.2 stands out with its refined design and user-focused improvements. This version introduces an updated mag position for better feeding reliability, ensuring smoother operation during use.

Key enhancements include:

• Stronger Mag Catch Lever: Built to withstand wear and tear for long-lasting performance.
• Improved Feeding Mechanism: Optimized for Glock mag compatibility, reducing jams and misfeeds.
• 3D Printed Components: Both the ejector and mag catch are 3D printed, offering easy customization.

These updates make the V1.2 a significant step up from its predecessor. It's a perfect blend of innovation and practicality for firearms enthusiasts looking to craft a reliable AR-9 lower.

Difficulty & Build Time

• Skill Level: Intermediate
• Estimated Build Time: 1-2 days
• Required Experience: Basic knowledge of AR-15/AR-9 assembly and 3D printing required

Hardware and Tools Required

Required Hardware

• 3/32" x 1" roll pin (for mag catch lever)
• #24 0.5" wide hose clamp (for buffer tower)
• (2) 10/32 x 1.25 screws (for swivel pin plates)
• (2) 10/32 3/8" wide hex nuts (for swivel pin plates)
• Heavy AR-9 buffer mass
• Standard AR-15 lower build kit components (excluding AR-15 mag catch and button)
• AR-15 mag catch spring (for use with mag catch lever)

Recommended Tools

• 3D printer for printing components
• Sandpaper (for fitting ejector if needed)
• Screwdriver or Allen key (for screws and hex nuts)
• Pliers (for hose clamp installation)
• Basic hand tools for AR-15 assembly

AR-9 Super Lower V1.2 Parts

This downloadable file includes the STL files necessary to print the AR-9 Super Lower V1.2, along with critical components like the ejector and mag catch lever. The ejector is designed to press into place without glue, requiring only a finger-tight fit—sand to adjust if necessary. Detailed build instructions are available as a PDF guide at this link.

For optimal results, print the ejector and mag catch with four walls, 50% gyroid or honeycomb infill, and four or five top and bottom layers. The recommended material for the ejector is Nylon for added durability, though PLA+ works for all parts if Nylon isn’t available. Refer to the included README for additional generic info and standard print settings.

Printer Compatibility & Settings

The AR-9 Super Lower V1.2 is compatible with most FDM 3D printers capable of handling detailed prints. Recommended materials include PLA+ for general use and Nylon for high-stress components like the ejector, ensuring durability under load. Standard print settings can be used for most parts, but specific settings for the ejector and mag catch include four walls, 50% gyroid or honeycomb infill, and four or five top/bottom layers.

Ensure your printer bed is leveled and adhesion is strong to avoid warping during long prints. For best results, use a printer with a build volume sufficient for larger lower receiver components. Always refer to the README file included with the download for any additional printer-specific recommendations.

Conclusion

The AR-9 Super Lower V1.2 is an exceptional choice for 3D printing and firearms enthusiasts seeking a reliable, customizable AR-9 build. With its improved feeding, stronger mag catch lever, and Glock mag compatibility, this design offers both performance and ease of assembly. Download today, follow the provided build guide, and take your custom firearm project to the next level!