Strategy Page reports …

The U.S. Army has ordered 3,053 of the new, lightweight, M-240L 7.62mm machine-guns, for $9,200 each. This model of the M-240 is 1.7 kg (3.75 pounds) lighter than the previous, M-240B. This was accomplished by using some lighter (titanium) components. Some other new components are also more durable. The reduction in weight makes a big difference for anyone carrying one of these up and down hills in Afghanistan for hours on end.

M240L 7.62mm Medium Machine Gun