WASHINGTON, DC, United States (UPI) -- Many in Congress and the Pentagon boast American troops have the best equipment in the world. But reports from the battlefields in Iraq and Afghanistan say otherwise. The information about the failures is not new; solutions are long overdue. Some of the most worrying questions center on the efficacy and lethality of the firearms U.S. forces are using. Official reports show high levels of dissatisfaction with the M-4 carbine, M16 rifle magazines, and M249 machine gun. The small size of the 5.56mm bullet used in these weapons is also highly controversial among some troops....