MSI Defence Systems US LLC, Rock Hill, South Carolina, is awarded a $23,463,149 firm-fixed-price contract for the procurement of 15 MK88 MOD4 Gun Mounts, associated hardware, and spares. Work will be performed in the United Kingdom (90%) and Rock Hill, South Carolina (10%) and is expected to be completed by March 2025. Fiscal 2023 weapons procurement (Navy) funds in the amount of $11,621,453 (50%); fiscal 2023 shipbuilding and conversion (Navy) funds in the amount of $8,991,450 (38%); and fiscal 2023 weapons procurement (Coast Guard) funds in the amount of $2,850,246 (12%), will be obligated at the time of award and will not expire at the end of the current fiscal year. This contract was not competitively procured in accordance with 10 U.S. Code 3204(a)(1), (only one responsible source and no other supplies or services will satisfy agency requirements.) Naval Surface Warfare Center Indian Head Division, Indian Head, Maryland, is the contracting activity (N00174-23-C-0015).