The Barrett 240LW (Light Weight) program has its design roots in the original U.S. Army solicitation for a lighter M240 medium machine gun in 2010. The program called for a much lighter version of the M240, while keeping the same familiar open bolt design that the machine gun is world-renowned for. This was formally known as the M240B Weight Reduction Program, or the M240E6. The results of that solicitation ended with the adoption of the M240L by the U.S. Army. By producing the receiver out of titanium, instead of steel, FN delivered a light-weight solution by trimming the weight of the M240B by 5.5 pounds, or an 18 percent weight reduction of the original machine gun, giving it an overall weight of 22.3 pounds. The Lima is in limited service with the U.S. Army.