Capabilities of the center included: load, assemble and pack ammunition; 40 mm cartridges; mortars and components; artillery projectiles; ignition cartridges; propelling charges; bursters; grenades; Tactical Missile System; demilitarization/disposal; renovation/reclamation; development and production test support; and logistical support.
MLAAP was housed on 22,531 acres (35.205 sq mi) (90.48 km2) with 1,450 buildings and 873 igloos and a storage capacity of 2,270,000 square feet (211,000 m2).
American Ordnance LLC, operating contractor of Milan Army Ammunition Plant, moved Milan's operations pertaining to ordnance manufacture to Iowa Army Ammunition Plant beginning in 2009.
Milan Army Ammunition plant, while still an active facility, no longer produced military ordnance.
In August 2019 Joint Munitions Command completed the movement of ammunition and explosive stocks stored at MLAAP and declared the plant no longer required for mission needs.