The 5-inch (127-mm) 62-caliber Mk 45 Mod 4 Naval Gun system is in U.S. Navy service today, and is ready to significantly enhance Naval Surface Fire Support (NSFS) and overall mission performance.

BAE Systems is in full-scale production of new 5-Inch 62-Caliber Mk 45 Mod 4 Naval Gun Systems to increase naval gunfire range and lethality for the U.S. Navy’s AEGIS ships and naval forces worldwide.

6 days ago · The U.S. Navy has awarded BAE Systems over $70 million to upgrade Mk 45 5-inch naval gun systems and ancillary equipment. On Sept. 30, BAE Systems received a $23.5 million modification to a $47 million contract awarded at the end of …

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

4 days ago · The U.S. Navy expanded a contract with BAE Systems, awarding the company more money to upgrade and overhaul the service’s Mk 45 naval gun systems in an effort to improve their long-range strike ...

The 5-inch (127 mm)/54-caliber (Mk 45) lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in (127 mm) L54 Mark 19 gun on the Mark 45 mount. [1] It was designed and built by United Defense, a company later acquired by BAE Systems Land & Armaments, which continued manufacture.

2 days ago · From BAE Systems, Jan. 27, 2025 Advanced firepower will continue to play a critical role at sea as Sailors face advanced threats The U.S. Navy has awarded BAE Systems over $70 million to upgrade Mk 45 5-inch naval gun systems and ancillary equipment.

5 days ago · The US Navy has contracted BAE Systems to upgrade Mk 45 5-inch naval gun systems, including the overhaul of existing systems, to the Mk 45 Mod 4 configuration. This modification, worth $23.5m, supplements a prior $47m contract, culminating in a total value surpassing $70m.

4 days ago · Mk 45 Naval Gun Systems Upgrade According to the deal, BAE Systems will upgrade and overhaul current systems and transition them into the Mk 45 Mod 4 configuration. The company will provide a 62-caliber barrel and a mechanically strengthened gun mount along with a digital control system for integrating targeting and fire control data.

4 days ago · Under the contract, BAE Systems will modernize the Mk 45 systems by extending the barrel length to 62 calibers to increase range and firing energy. The upgrades will also include reinforcing the gun mounts for durability and integrating a fully digital control system that can support advanced targeting and fire control.