Zak, you did not read, or maybe understand, my comment. A rifle != machine gun. Physics sucks but there is nothing that can be done about it. You cannot fire a

Zak, you did not read, or maybe understand, my comment. A rifle != machine gun. Physics sucks but there is nothing that can be done about it. You cannot fire a gun constantly. The barrel will eventually heat up to near melting point, then explode when a round is fired. Machine guns have heavy profile barrels (ie. really thick) and can be replaced quickly. Machine gun teams carry spare barrels for this purpose.