Possible Clues:

• Civil War weapon
• Girl in fleece produces weapon
• Gun
• Caught girl on piece of artillery
• A general rule covering new equipment produced by a major employer
• Clergyman taking a point to heart may be fired
• Large gun on wheels
• 'Might one go off in church, by the sound of it? (6)'
• May be in a battery but can't have a battery in one
• Heavy artillery