BAE Systems to rebuild two Mk 45 guns for U.S. Navy warships

BAE Systems received a $38.2 million US Navy modification to overhaul two Mk 45 Mod 4 naval guns at its Louisville, Kentucky, facility. The 5-inch, 62-caliber system uses digital controls and a strengthened mount to provide surface-fire support and ship self-defense, and refurbishment restores serviceable capability without buying entirely new mounts. Work is scheduled for completion in March 2030 using fiscal 2024 shipbuilding funds, while the cost-plus-incentive structure reflects uncertain overhaul findings; the award covers two specific gun systems rather than a fleetwide replacement or new munition procurement.