MineblastAR - 3D Printable AR15 Low-Poly Receiver

MineblastAR - 3D Printable AR15 Low-Poly Receiver Features

The MineblastAR stands out with its low-poly, pixelated aesthetic, mimicking an 8-bit video game style while maintaining full functionality as an AR15 lower receiver. This design isn’t just for looks—it’s built to work.

• Unique Remix Design: Based on the XBAR and UBAR2, this receiver includes a printed buffer tower and front takedown housings, setting it apart from traditional builds.
• Functional Components: Comes with a matching grip and trigger, ensuring a cohesive, retro-inspired look for your AR15.
• Lightly Tested Innovation: Developed over a weekend, it’s a bold experiment—use at your own risk with strong materials for best results.

This design merges creativity with utility, making it a must-have for those who value both form and function in their 3D printed firearm projects.

Difficulty & Build Time

• Skill Level: Intermediate
• Estimated Build Time: 1-2 days (including printing and assembly)
• Required Experience: Familiarity with 3D printing, firearm assembly, and working with AR15 lower parts kits

Hardware and Tools Required

Required Hardware

• PA-CF/GF filament (or very strong PLA)
• (2x) M5x16 allen head bolt + M5 nut
• (2x) M4x35 allen head bolt + M4 nut
• (1x) M2x16 bolt + M2 nut (optional)
• 1/4 x 1.5” and 1/4 x 2” clevis pins (or preferred takedown hardware)
• Standard AR lower parts kit

Recommended Tools

• 3D printer with a 0.4mm nozzle
• Allen wrenches for bolt assembly
• Tools for installing standard AR lower parts
• Sanding or finishing tools for post-processing (optional)

MineblastAR - 3D Printable AR15 Low-Poly Receiver Parts

This downloadable file includes the STL files for the MineblastAR lower receiver, along with a matching grip and trigger to complete the pixelated aesthetic. For optimal strength, it’s highly recommended to print using PA (nylon) CF/GF filament, though a strong PLA Plus/Pro may suffice (untested). Special considerations include printing the buffer tower and front takedown housings, which require durable materials to ensure functionality.

Detailed build instructions are available in the accompanying PDF guide at: MineblastAR Build Instructions. Follow these to assemble a receiver that’s as striking as it is practical.

Printer Compatibility & Settings

The MineblastAR is compatible with most FDM 3D printers capable of handling a 0.4mm nozzle and precise layer heights. Recommended settings include a 0.2mm layer height, a minimum of 10 walls, and tree supports for overhangs, with an infill of over 20% for added strength. Materials like PA-CF/GF filament are strongly advised for durability, especially for critical components like the buffer tower, though a robust PLA variant may work in a pinch (use caution as this is untested).

Ensure your printer is calibrated for tight tolerances to achieve the best fit and functionality for this AR15 lower receiver design. Proper bed adhesion and support removal techniques are crucial for a clean final product.

Conclusion

The MineblastAR - 3D Printable AR15 Low-Poly Receiver is a game-changer for 3D printing and firearms enthusiasts, offering a blend of retro 8-bit style and real-world functionality. With its unique design and accessible build process, it’s an exciting project for intermediate builders ready to experiment with innovative receiver designs. Download the files, grab your strongest filament, and dive into the detailed build guide to bring this pixelated masterpiece to life!