M198 howitzer
The M198 is a medium-sized, towed 155 mm artillery piece, developed for service with the United States Army and Marine Corps. It was commissioned to be a replacement for the World War II-era M114 155 mm howitzer. Wikipedia
Shell: Separate loading charge and projectile
Weight: 15,760 pounds
Barrel length: 6.09 m (19.98 ft) L/39
Breech: Interrupted screw
Caliber: 155 mm (6.1 inch)
Crew: 9 enlisted men
Designed: 1968–1977