Police said Luigi Mangione, the man charged in the killing of UnitedHealthcare CEO Brian Thompson, appears to have had a ghost gun, a weapon that can be made using a 3D printer.

Police officers are essential to maintaining public safety, with responsibilities like patrolling designated areas, issuing ...

Types of shotguns are classified by their action, which is their operating system, so to speak, and by their gauge, an archaic measure of caliber. Each action type and gauge has its advantages and ...

As for the 8x22mm cartridge, it’s a rimless bottleneck cartridge with a diameter of 0.320 inch, generating a muzzle velocity ...