USN 5in/62 (12.7 cm) Mark 45 barrels (2pcs) - USN Arleigh Burke class, Korean KDX II, Japan Kongo class
Used on:
United States:
- New-construction Arleigh Burke class DDG's. First installed on USS Winston Churchill DDG-81
- Can replace existing 5"/54 (12.7 cm) mounts
- Modernized Ticonderoga (Flight II) CG-47 class
Republic of Korea:
- KDX II destroyers
Japan:
- Kongo class Aegis destroyers
Denmark:
- Flexible Support Ships.