MIAMI — Navegar Inc., the gunmaker that manufactured the TEC-DC9 semiautomatic weapon used at Columbine High and other mass slayings, has gone out of business, The Miami Herald reported Friday. State records show that Navegar and a sister corporation, Armak, were voluntarily dissolved on April 16. Ed Halley, spokesman for the local office of the Bureau of Alcohol, Tobacco and Firearms, said the firm gave up its manufacturing license sometime before that. Last week... (GunPolicy.org)