SW1522 3D Printable Receiver

SW1522 3D Printable Receiver Features

The SW1522 3D Printable Receiver stands out with its purpose-built design for Smith & Wesson M&P 15-22 kits, ensuring seamless compatibility and performance. This receiver is derived from the trusted Disruptive Solutions AR-15 lower via FOSSCAD, but it’s been meticulously adapted for 3D printing with considerations for shrinkage and calibration.

Key highlights include:

• 1913 Rail Integration: A rear-mounted rail for attaching compact braces or stocks, enhancing customization.
• Bolt-Catch Delete: Reinforces structural integrity by removing unnecessary components.
• Integrated Bolt-Press-Forward: Boosts reliability during operation, ensuring consistent performance.
• Two Variants: Choose between the SW1522 for exclusive use with S&W 15-22 magazines (requires specific bolt-hold open) or the CM1522 for compatibility with CMMG and Vinh’s AR-15 22 LR mags.

These features make the SW1522 a practical and innovative choice for hobbyists seeking precision and durability in their builds.

Difficulty & Build Time

• Skill Level: Intermediate
• Estimated Build Time: 12-18 hours
• Required Experience: Familiarity with 3D printing calibration, firearm assembly, and basic knowledge of AR-15 lower receivers

Hardware and Tools Required

Required Hardware

• Smith & Wesson M&P 15-22 kit (for SW1522 variant) or CMMG/Vinh’s AR-15 22 LR mags (for CM1522 variant)
• S&W 15-22 specific bolt-hold open (for SW1522 variant)
• Compatible braces or stocks for 1913 rail mounting

Recommended Tools

• 3D printer with precise calibration capabilities
• Standard firearm assembly tools (punches, hammers, screwdrivers)
• Calipers for measuring tolerances and fitment
• Sandpaper or finishing tools for post-processing printed parts

SW1522 3D Printable Receiver Parts

The SW1522 3D Printable Receiver file includes STL models for both the SW1522 and CM1522 variants, allowing users to select the configuration that best suits their needs. These files are optimized for 3D printing, with design adjustments to account for material shrinkage and ensure functional fitment. For best results, print with high infill (80-100%) to maintain structural integrity under stress.

We recommend using durable materials like PETG or ABS to withstand the mechanical demands of a firearm receiver. Pay close attention to layer adhesion and avoid warping by using a heated bed and enclosure if possible. Post-processing may be required to smooth surfaces and ensure proper fit with hardware components.

Printer Compatibility & Settings

The SW1522 receiver is compatible with most FDM 3D printers, provided they are properly calibrated for dimensional accuracy. Materials such as PETG or ABS are highly recommended due to their strength and heat resistance, though advanced users may experiment with nylon for added durability. PLA is not advised due to its brittleness and low tolerance for stress.

Suggested print settings include a layer height of 0.2mm, 80-100% infill, and a minimum of 4-6 wall layers for robustness. A heated bed (60-80°C for PETG, 90-110°C for ABS) and an enclosed print environment are critical to prevent warping. Ensure your printer is 100% calibrated, as the design accounts for precise tolerances to guarantee functionality.

Conclusion

The SW1522 3D Printable Receiver offers an exciting opportunity to build a custom AR-15 lower tailored for Smith & Wesson M&P 15-22 kits, blending innovation with practicality. With its unique features, community-backed design, and detailed build guide available at The Gatalog, this file is perfect for intermediate builders ready to tackle a rewarding project. Download today, join the community at thegatalog.com, and start crafting your vision with precision and confidence.