M5A2 carbine

the M5A2 carbine is the primary weapon of the US rangers http://images.google.be/images?client=firefox-a&rls=org.mozilla%3Anl%3Aofficial&hl=nl&q=M5A2+carbine&btnG=Afbeeldingen+zoeken&gbv=2

PRIMARY FIRE  : rapid fire bullets SECONDARY FIRE : 40mm grenades

This is the weapon you gain at the beginning of the game and one of the only weapons the human soldiers use.