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 ...

It addresses weapons such as the M4A1, called an “assault rifle gun.” Getty Images. A U.S. District Court decision on Thursday, Oct. 19, overturning California’s assault weapons ban is ...