Possible Clues:

• Arm broke, then leg, ultimately in shock
• Shock around England seeing the British Army's weapon
• One fires with a lot of force into heavenly body
• Killer getting warmer having pocketed ten thousand pounds?
• Simply designed British firearm
• Weapon gents deployed when joining peacekeepers?
• Arm of the British military
• Weapon developed during World War II
• British arm
• Render unconscious, packing English weapon