Rock Island Arsenal, Illinois

The largest government-owned weapons manufacturing plant in the country. It is operated by the U.S. Army's Industrial Operations Command, and staffed mostly by civilians. Producing weapons on this 946-acre island in the Mississippi River since 1862, it currently manufactures primarily Howitzers, gun mounts, select small arms, aircraft weapons sub-systems, grenade launchers, as well as assorted spare parts, and includes other military tenant organizations on the base.

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CLUI photo