A CNN roundtable discussion got a little tense Thursday as one panelist told another to stop touching him on air. The awkward ...

The gun found on the man charged with killing United Healthcare's CEO matched shell casings found at the site of the shooting, New York City's police commissioner said Wednesday.

Besides the M16/M4/AR-15 series, the most famous, or “infamous,” depending on whom you ask, and iconic military rifle of ...