# Army Selects Five PrSM Prototype Developers

On September 29, 2026, the U.S. Army awarded separate Other Transaction Authority agreements to Anduril, Castelion, Lockheed Martin, Mach Industries, and RTX to develop Precision Strike Missile (PrSM) Increment 4 prototypes. The missiles are intended to launch from HIMARS and strike moving maritime and relocatable land targets at ranges of at least 1,000 kilometers; an open architecture is also cited as a program feature. The Army plans a competitive fly-off and down-select in FY2027. Reporting differs on later milestones: some accounts cite a final fly-off in FY2028, while another cites a potential final down-select in FY2030. Agreement values were not disclosed, and the prototype awards are not an open solicitation for additional participants.

- The five awardees are the direct prototype competitors. Other suppliers may find supporting opportunities in propulsion, warheads, seekers, open-architecture systems, targeting data, and resilient communications.
- Companies pursuing subcontracting or teaming work should align offerings with HIMARS compatibility, the 1,000-kilometer range objective, and engagement of moving land and maritime targets.
- Procurement and business-development teams can use the FY2027 competition milestone to assess likely supplier needs and potential follow-on work; the agreements’ values and detailed requirements were not disclosed.

**Jurisdictions:** federal
**Industries:** Defense & Military
**Topics:** Contracting Vehicles
**Published:** October 01, 2026

### Government Entities
- U.S. Army (Army)

### Vendors
- Anduril (OTA prototype awardee)
- Castelion (OTA prototype awardee)
- Lockheed Martin (OTA prototype awardee)
- Mach Industries (OTA prototype awardee)
- RTX (OTA prototype awardee)

### Sources
- [US Army selects five companies for PrSM development](https://www.defensenews.com/industry/techwatch/2026/09/30/us-army-selects-five-companies-for-prsm-development) - defensenews.com
- [Army Picks Five Companies To Develop Long-Range PrSM Inc. 4 Prototypes - Defense Daily](https://www.defensedaily.com/army-picks-five-companies-to-develop-long-range-prsm-inc-4-prototypes/army) - Defense Daily
- [Army taps 5 companies for PrSM Inc 4 prototypes - Breaking Defense](https://breakingdefense.com/2026/09/army-taps-5-companies-for-prsm-inc-4-prototypes) - Breaking Defense