From conservative site Judicial Watch:

Pentagon Loses Weapons

Thousands of sophisticated weapons earmarked for Iraqi security forces are missing from the U.S. Department of Defense and government officials say it is unlikely that they will be recovered. The Pentagon cannot account for 14,030 weapons that include assault rifles, machine guns, rocket-propelled grenade launchers and semiautomatic pistols that could easily be used by terrorists to attack civilians in the United States.