Police are to review the firearms laws after it was revealed the gun suspected of killing a police officer yesterday can be bought over the counter or on the internet by anyone over the age of 18. Sergeant Don Wilkinson, 46, is believed to have been shot dead by a powerful, gas operated, rifle which shoots a pellet similar in size to a conventional .22 calibre rifle round. A colleague is in a comfortable condition in hospital after also being shot while the pair were... (GunPolicy.org)