The polymer material is just too weak to survive contact with a bullet. "The real mechanism of the gun, the actual shooting part of the gun, it definitely cannot be 3D printed," said Dr. Mojib Saei.

Police said the gun involved was sent for testing, and the ballistics results confirmed that it fired the bullet that struck the school. Police said from the beginning, there was no evidence that ...

The 14-year-old boy who allegedly shot and killed Newark, N.J., Detective Joseph Azcona in a barrage of 29 bullets used a ghost gun with a device that turned it into “the world’s smallest ...

BUYING IN BULK U.S. gun, rifle and ammunition sales to civilians were $4.3 billion in 2011, with bullets amounting to about a third of the total, the National Shooting Sports Foundation estimates.