The M4/M4A1 5.56mm Carbine is a lightweight, gas operated, air cooled, magazine fed, selective rate, shoulder fired weapon with a collapsible stock. It is now the standard issue firearm for most ...

founded in 1836 by Samuel Colt, has been one of the U.S. military’s longest-serving suppliers, but the company has fallen on hard times of late: it lost a government contract for the M4 carbine ...