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) …
Footage of the MK-45, the MK-38, and the MK-76 Navy deck guns firing rounds downrange. The United States Navy (USN) is the naval warfare service branch of the United States …