Most of the nearly 3,000 weapons exchanged for a $100 bill during this summer's gun amnesty program were about 15 years old, many were cheap revolvers barely worth $30 on the street, and none of the ones tested so far had been used to kill anyone, according to an analysis by the Bureau of Alcohol, Tobacco and Firearms. The study represents the first comprehensive look at the weapons turned in by citizens in these "buyback programs," used by many police departments to... (GunPolicy.org)