Galileo R2

3d printed 1022 galileo r2

Galileo R2 STL Files

3D Printable Ruger 10/22

The Galileo R2 is a 3D printable firearm based on the Ruger 10/22 platform. It utilizes several key OEM and aftermarket 10/22 parts, along with 3D printed components and some standard hardware. The build guide provides instructions for printing and assembling the Galileo R2 into a functional rifle.

In The Wild



Galileo R2 Technical Specs

  • Compatible with Ruger 10/22 bolt, charging handle, trigger pack, and barrels
  • Supports AR-15 free float handguards and pistol grips
  • Integrated 1913 Picatinny rail on receiver
  • Barrel retention system secures barrel to 3D printed receiver
  • Multiple 3D printable handguard and stock/brace options available

Galileo R2 Parts List


  • (1) 10/22 bolt and charging handle assembly
  • (1) 10/22 trigger pack
  • (1) 10/22 barrel (16″+ for rifle, shorter for pistol builds)

3D Printed Parts

  • (1) Galileo R2 upper receiver
  • (1) Galileo R2 lower receiver
  • (1) Barrel nut (standard or Proto barrel version)
  • (1) Handguard (various lengths/styles available)
  • (1) Stock or pistol brace (multiple options)
  • (1) Grip (AR-15 compatible)
  • Print all parts in the orientation provided using PLA+ or stronger filament at high infill.

Hardware & Tools

  • M3, M4, and M5 nuts, bolts, and screws (see guide for full list)
  • 3/16″ dowel pins for trigger pack
  • M3x10mm steel pin for handguard alignment
  • 0.75″ compression spring for folding stock
  • 1/4-20 threaded rod and nuts for certain stock
  • Standard hex wrenches and screwdrivers

Galileo R2 Build Instructions

The Galileo R2 build guide provides a clear pathway to 3D print and assemble a customized 10/22 platform pistol or rifle. With a wide array of handguard and stock options, you can really make the build your own. While some firearm assembly knowledge is helpful, the comprehensive instructions make this an approachable project for hobbyists. Always follow proper safety precautions and ensure compliance with all applicable laws when building and operating firearms.

Happy printing and safe shooting!

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DISCLAIMER: 3D STL files are for learning and documentation purposes only. The users of this website and files need to be aware of all applicable local, state, federal and regional laws. 3D Gun Builder does not encourage, condone, or promote any illegal activity.

3D Gun Builder ( does not host, provide, develop, and/or have any affiliation with the firearm STL files or All files are hosted by a third party.

Dan M.
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