Popular Resources
Colt Frame Sizes Reference
A frame size reference for Colt revolvers
3D Printing
Where to Find 3D Gun Files: The GunCAD Developer Index
A free list of public-facing collections of 3D printed gun files by various individual contributors and design groups.
3D Printing
Get Started 3D Printing Guns
Get started 3D printing your own firearms right at home with the En Bloc Press guide to 3D printing