Related Clues:

• Rifle, e.g.
• If you fire it, it makes a report
• Top __
• Action movie prop
• "Water," "squirt" or "cap" ending
• Caulking tool
• You may hear a report from one
• Radar device
• Derringer, e.g.
• 16-Across sleeps with a pillow under his ___
• Accelerate, in a way
• Battleship feature
• Starter's device
• One may shoot someone after getting fired
• Round container