http://news.backchina.com/viewnews-173088-big5.html
這裡還有讀者的回應也頗值得一讀 雖然乍看之下2.2公斤並不算多 但如果要扛著上山下海,衝鋒陷陣 2.2公斤可是千鈞之重
By using some lighter (titanium) components, M-240L is 1.7 kg (3.75 pounds) lighter than the previous model -- M-240B, according to The Firearm Blog. The reduction in weight makes a big difference for solders that carrying M-240B up and down hills for hours on end. Overall, the resulting improvements for this new model will reduce anyone’s combat load while allowing easier handling and movement of this updated model.
The U.S. Army has ordered 3,053 of the new, lightweight, M-240L 7.62mm machine-guns, for $9,200 each. As anyone can see, the price for M-240B is not affordable at all.