Battle Rifle - 7.62x51mm NATO - USA - 750 RPM - The final product of the US Army's Springfield Armory, the M14 is the evolutionary heir to the M1 Garand of World War II.  Due to institutional bias, it beat out the FN FAL for adoption as the US service rifle.  However, early production problems and a lack of control in full-auto fire allowed the Colt M16 to displace it.  The M14 still serves onboard US Navy vessels, and in modified form, the M21, as a sniper rifle. The US Navy SEALs also use this weapon occasionally.