Superstar-15 3D Printable Lower Receiver

Superstar-15 3D Printable Lower Receiver Features

The Superstar-15 stands out with its exclusive compatibility with buffer-less AR-15 upper receivers, a critical design aspect that sets it apart from traditional lowers. This feature eliminates the need for a buffer tube, streamlining the build process while maintaining structural integrity.

Here are some key highlights of this innovative design:

• Buffer-Less Design: Specifically engineered for buffer-less upper receivers, ensuring a unique and lightweight build.
• Mossberg 500-Series Compatibility: Easily attach any compatible stock or pistol-grip for a personalized setup.
• Based on Proven Concepts: Inspired by the Disruptive Solutions AR-15 lower, with internal revisions (Frame v56, Grip v13) for improved fitment and ease of installation.

A critical safety warning accompanies this design: do not use with upper receivers requiring a buffer tube, as catastrophic and potentially fatal damage may occur. Always prioritize safety and thoroughly review the documentation before starting your project.

Difficulty & Build Time

• Skill Level: Intermediate
• Estimated Build Time: 12-16 hours
• Required Experience: Familiarity with 3D printing, AR-15 assembly, and basic firearm safety protocols

Hardware and Tools Required

Required Hardware

• Bufferless AR-15 Upper Receiver: Essential for compatibility (examples include Brownells AR-180 or similar models).
• Mossberg 500-Series Stock or Pistol-Grip Attachment: Necessary for completing the assembly.

Recommended Tools

• 3D Printer (FDM or resin, based on material choice)
• Calipers for precise measurements
• Screwdrivers and Allen keys for assembly
• Sandpaper or finishing tools for post-processing
• Safety gear (gloves, eye protection) during assembly

Superstar-15 3D Printable Lower Receiver Parts

This downloadable file includes the STL models for the Superstar-15 lower receiver, featuring the Groupie STR-15 frame (Internal Revision v56) and grip (Internal Revision v13). These components are optimized for 3D printing, allowing users to create a robust and functional AR-15 lower receiver at home. For detailed assembly guidance, a PDF build guide is available at the provided link.

When printing, consider using high-strength materials like PETG or ABS for durability, as this component will endure mechanical stress. Ensure proper layer adhesion by adjusting print settings, and allocate time for post-processing to smooth out any rough edges. Always test fitment with your upper receiver and attachments before finalizing the build.

Printer Compatibility & Settings

The Superstar-15 3D Printable Lower Receiver is compatible with most FDM 3D printers capable of handling durable materials like PETG or ABS, which are recommended for their strength and impact resistance. PLA is not advised due to its brittleness under stress. Resin printers may also be used for finer detail, though additional reinforcement might be necessary.

For optimal results, use a layer height of 0.2mm, an infill density of at least 50%, and ensure proper bed adhesion to prevent warping. A heated bed (60-80°C for PETG, 90-110°C for ABS) is highly recommended to maintain print stability. Always monitor your printer during long sessions to avoid failures, and refer to the build instructions for any specific printing tips.

Conclusion

The Superstar-15 3D Printable Lower Receiver offers an exciting opportunity for firearms and 3D printing enthusiasts to craft a custom AR-15 component with cutting-edge design features. Its buffer-less compatibility and Mossberg 500-series integration make it a standout choice for innovative builders. Download the file, follow the detailed build guide, and join the community at thegatalog.com to share your journey and connect with like-minded creators!