The M777 howitzer is a towed 155 mm artillery piece, successor to the M198 howitzer in the United States Marine Corps and United States Army. The M777 is also used by the ground forces of Canada and Australia. It made its combat debut in the War in Afghanistan.The M777 is manufactured by BAE Systems' Global Combat Systems division. Prime contract management is based in Barrow-in-Furness in the UK as well as manufacture and assembly of the titanium structures and associated recoil components.