The U.S. Navy has awarded BAE Systems over $70 million to upgrade Mk 45 5-inch naval gun systems and ancillary equipment.

The gun was first deployed in 1971 as the Mk 45 Mod 0, and has been updated in the more than five decades since.

Advanced firepower will continue to play a critical role at sea as Sailors face advanced threats ...

The US Navy has contracted BAE Systems to upgrade Mk 45 5-inch naval gun systems, including the overhaul of existing systems, ...

We continue our commitment to providing the latest naval gun technology ... of the five-inch guns. “The upgrade to the Mk 45 Mod 4 configuration includes a 62-caliber barrel and a mechanically ...