Advancements in 3D-printing technology have yielded increasingly reliable 3D-printed firearms, many of which require no federally regulated components to function. Below, The Trace breaks down the ...

Arrests connected to the home-built weapons are growing rapidly in the U.S. and around the world. It’s likely to prove harder for governments and police to keep them out of the hands of criminals and ...

As a photo circulated online the fake New Jersey driver’s license and 3D-printed gun police found on Luigi Mangione, he spotted the tell-tale stippling pattern on the firearm’s grip.