[b]Neil:[/b] Well, frag is an expression from computer games. It means to kill your opponent.
Think of you of smile, enjoy in retrospect you of flavor, take off your coat, show your wonderful, control my heart beat, suppress my manic, think about my needs, or frag you...!
The Atchisson also fires a high explosive or fragmentation grenade called a FRAG-12 round to 175 meters with equal efficiency.