The Glock 19 is a semiautomatic pistol so reliable that it is used by thousands of law enforcement agencies around the world, including the New York Police Department, to protect the police and the public. On Saturday, in Tucson, it became an instrument of carnage for two preventable reasons: It had an oversize ammunition clip that was once restricted by federal law and still should be; and it was fired by a disturbed man who should never have been able to purchase it... (GunPolicy.org)