The first Army M198 unit became operational in April of 1979. Since entering production, over 1,600 units have been manufactured, with the final units coming out of Rock Island in 1992.

ROCK ISLAND ARSENAL (KWQC ... The Arsenal is the Quad-Cities’ largest employer, with 7,500 workers. First Army’s headquarters is on the Island, as well as the Army’s only active foundry. Earlier this ...