The New Upgrade of M777 Howitzer created by the Extended Range Cannon Artillery (ERCA) project to extend range from 30 to 70 km (19 to 43 mi). Modified with a longer 58-caliber, 30 ft (9.1 m) barrel and supercharged propellant firing the XM1113 rocket-assisted projectile.
M777 Howitzer is successor to the M198 howitzer in the U.S. Marine and U.S. Army.