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.

1 hour ago · The upgrade to the Mk 45 Mod 4 configuration includes a 62-caliber barrel and a mechanically strengthened gun mount. It also features a fully digital control system that easily integrates targeting and fire control data. Together, these upgrades allow the use of modernized munitions with 50% greater firing energy and prepare for future ...

2 days ago · The upgrade to the Mk 45 Mod 4 configuration includes a 62-caliber barrel and a mechanically strengthened gun mount. It also features a fully digital control system that easily integrates targeting and fire control data. Together, these upgrades allow the use of modernized munitions with 50% greater firing energy and prepare for future ...

2 days ago · The company will extend the barrel of the Mk 45 to 62 calibers and strengthen the gun mounts. It will also incorporate a fully digital control system. The upgrades will allow the Mk 45s to fire ...

2 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.

2 days ago · The company will extend the barrel of the Mk 45 to 62 calibers and strengthen the gun mounts. It will also incorporate a fully digital control system. The upgrades will allow the Mk 45s to fire ...

All Mk 45 naval gun systems provide ships with a reliable automatic weapon system against surface, land, and air targets. Highly accurate train and elevation response rates permit engaging these targets under all operating environments and sea conditions.

Fully-automatic naval gun mount employed against surface (Anti-Surface Warfare - ASuW), air (Anti-Air Warfare - AAW), and land attack (Naval Surface Fire Support - NSFS) targets. The MK 45 gun...

Sep 20, 2021 · The MK 45 MOD 4 gun mount upgrade includes a longer barrel (62 caliber) that improves the gun's effectiveness as a land attack weapon (naval surface fire support).

The 54-caliber (Mk 45) lightweight gun provides surface combatants accurate naval gunfire against fast, highly maneuverable surface targets, air threats and shore targets during amphibious...