The XM777 lightweight 155 mm howitzer (LW155
) is a joint US Marine Corps/US Army programme aimed at replacing the M198 155 mm towed howitzer currently used by both services.
By incorporating new casting designs into the 155 mm howitzer design, the LW155 was born.
BAE Systems RO Defense (formerly the armaments group of Vickers Shipbuilding and Engineering, Ltd.), Barrow-in Furness, England, originally designated the LW155 as the Ultra lightweight Field Howitzer, but it has since been named the M777.
Now in low-rate initial production, the LW155 is a 155 mm lightweight towed howitzer designed to improve ground and air mobility for quick battlefield response.
Hatch said these changes have further reduced the number of welds by 80%, with a 77% reduction in weld inches, "The titanium casting conversions have resulted in major improvements to the producibility, quality and cost of the LW155," he said.