Daichi 3D Printable 22lr AR15 Upper Receiver

Daichi 3D Printable 22lr AR15 Upper Receiver Features

The Daichi Upper Receiver stands out with its thoughtful revisions to ensure seamless integration with your AR-15 lower receiver. This design addresses critical fitment issues for the charging handle and lower receiver, making assembly smoother than ever.

Key highlights include:

• Standard Picatinny Rail: Perfect for mounting optics or accessories with ease.
• Printable Barrel Shroud and Nut: A complete DIY package that includes a brand-new, 3D-printable barrel shroud and nut for a polished, professional look.
• Rimfire Optimization: Specifically engineered for .22 LR conversion or dedicated kits, offering precision for rimfire enthusiasts.

Based on DangerCat5’s Revision 6 (2019) and earlier iterations, this 2020 update by nguyenkvvn combines years of community feedback into a reliable and user-friendly design. Whether you’re upgrading or building from scratch, this upper receiver set delivers practicality and innovation.

Difficulty & Build Time

• Skill Level: Intermediate
• Estimated Build Time: 12-18 hours
• Required Experience: Familiarity with 3D printing, basic firearms assembly, and AR-15 platform knowledge

Hardware and Tools Required

Required Hardware

• AR-15 lower receiver compatible with .22 LR kits
• .22 LR barrel and bolt carrier group (not included in print files)
• Standard AR-15 pins and hardware for upper-lower assembly

Recommended Tools

• 3D printer with a build volume sufficient for upper receiver parts
• Calipers for precise fitment checks
• Allen keys and screwdrivers for assembly
• Sandpaper or finishing tools for post-print smoothing
• Drill (if minor adjustments are needed for fitment)

Daichi 3D Printable 22lr AR15 Upper Receiver Parts

This downloadable package includes STL files for the Daichi .22 LR Upper Receiver, a barrel shroud, and a barrel nut, providing a comprehensive set for your AR-15 build. These components are designed to work together for a cohesive rimfire setup. For detailed assembly guidance, a PDF build guide is available at the provided link.

For optimal results, print with a high infill percentage (50-75%) to ensure structural integrity under recoil stress. Consider using a durable material like PETG or ABS for longevity, and pay attention to layer adhesion during printing. Post-processing, such as sanding or acetone smoothing (for ABS), can enhance the finish and fitment.

Printer Compatibility & Settings

The Daichi Upper Receiver files are compatible with most FDM 3D printers that have a sufficient build volume to accommodate the upper receiver dimensions. A printer like the Ender 3 or Prusa i3 with a build plate of at least 220x220mm is recommended for hassle-free printing.

Use PETG or ABS as the preferred materials due to their strength and heat resistance, critical for firearm components. Suggested settings include a 0.2-0.3mm layer height, 50-75% infill, and supports enabled for overhangs like the Picatinny rail. Ensure proper bed leveling and cooling to prevent warping during long prints.

Conclusion

The Daichi 3D Printable 22lr AR15 Upper Receiver is an exceptional choice for firearms enthusiasts eager to explore the potential of 3D printing in their builds. With its refined design, community-driven improvements, and comprehensive DIY package, it offers both functionality and customization for your AR-15 rimfire project. Download the files, follow the build guide, and join the community at thegatalog.com to showcase your creation and learn from fellow builders.