Nammo Defense Systems, Inc., Mesa, Arizona, is awarded a $22,000,000 five-year indefinite delivery/indefinite quantity, firm-fixed-priced contract for MK 21 MOD 0 Scalable Offensive Hand Grenades (SOHG), fuses, and testing. Inert and inert cutaway versions of the SOHG will also be procured for training purposes. The contract value is $22,000,000. Fiscal 2022 procurement of ammunition (Navy and Marine Corps) $9,158,672 (86%); Fiscal 2022 defense procurement $1,384,451 (13%), and Fiscal 2022 ammunition procurement (Army) $106,496 (1%) funding will be obligated at time of award and not expire at the end of the current fiscal year. Work will be performed in Vihtavuori, Finland (90%); Mesa, Arizona (10%), and is expected to be completed by October 2028. This contract action was not competitively procured via the System for Award Management website. This is a sole source action in accordance with Defense Federal Acquisition Regulation 6.302-1 — only one responsible source. No other supplies or services will satisfy agency requirements. Naval Surface Warfare Center, Crane Division, Crane, Indiana, is the contracting activity (N0016422DJR85).