Possible Clues:

• Weapon fired by nice man - ugh!
• Prop in many an action film
• Hug nice man that's turned out to be a killer
• With a measure of speed sister, say, grabbed weapon
• Chap clutching part of face, say, beginning to unmask serial killer
• Touring China, Meg takes a French weapon
• Minute change in uranium compound that dispatches many slugs
• Rapid-firing automatic
• Rapid-fire weapon
• Rat-a-tat-tat weapon