Army Picks Five Companies to Compete for PrSM Increment 4
The US Army has selected Anduril, Castelion, Lockheed Martin, Mach Industries and RTX to develop prototype missiles for Increment 4 of the Precision Strike Missile, known as PrSM. The agreements were announced on September 30, 2026, through Redstone Arsenal.
Each company received an Other Transaction Authority agreement. The Army did not disclose values. The goal is a missile launched from the M142 HIMARS that can reach at least 1,000 kilometres.
Five Companies Enter the PrSM Increment 4 Competition
| Item | Detail |
|---|---|
| Customer | US Army |
| Selected companies | Anduril, Castelion, Lockheed Martin, Mach Industries, RTX |
| Agreement type | Other Transaction Authority agreements |
| Value | Not disclosed |
| Range requirement | At least 1,000 km (621 miles), roughly double baseline PrSM |
| Targets | Moving maritime and land targets |
| Launcher | M142 HIMARS |
| Announced | September 30, 2026 |
The Army reopened the competition in April. It had earlier awarded work to Lockheed Martin and a team of RTX and Northrop Grumman in 2023, according to Breaking Defense. Three newcomers, Anduril, Castelion and Mach Industries, have now been added to the field.
How the Fly-Off Will Work
Development will end in a competitive fly-off and down-select, the Army said. Breaking Defense reported the first fly-off and initial down-select in fiscal 2027, a final fly-off in fiscal 2028 and a potential final down-select in fiscal 2030. Designs that succeed become eligible for further agreements.
The requirement also calls for an open systems architecture so hardware and software can be changed without redesigning the whole missile, and for compatibility with Indo-Pacific operations.
The Competitors and What They Bring
| Company | Known PrSM role | Note |
|---|---|---|
| Lockheed Martin | Builds the baseline PrSM; $1.2 billion contract reported for Increment 2 production | Tested a booster-to-ramjet handoff in June at an L3Harris facility; full flight tests expected this autumn |
| RTX | 2023 Increment 4 team with Northrop Grumman | Selected again in this round |
| Anduril | New entrant to the Increment 4 field | Selected in this round |
| Castelion | New entrant to the Increment 4 field | Selected in this round |
| Mach Industries | New entrant to the Increment 4 field | Selected in this round |
Lockheed’s June test points to a ramjet approach for extending range, though the company has not said whether that design is its Increment 4 entry. That reading is analysis. The Army did not describe any of the five designs.
Lockheed Martin Company Profile
| Item | Detail |
|---|---|
| Headquarters | Bethesda, Maryland |
| Formed | 1995, merger of Lockheed Corporation and Martin Marietta |
| Employees | About 123,000 (end of 2025) |
| Revenue | $75.0 billion (2025) |
| Missiles and Fire Control sales | $14.5 billion (2025) |
| Known programmes | PrSM, GMLRS, HIMARS, PAC-3, JASSM, F-35 |
PrSM Increment 4 FAQ
What is PrSM Increment 4?
A development effort for a longer-range version of the Precision Strike Missile, with at least 1,000 km range and the ability to hit moving maritime and land targets.
Which companies were selected?
Anduril, Castelion, Lockheed Martin, Mach Industries and RTX.
How much are the agreements worth?
The Army did not disclose values for the Other Transaction Authority agreements.
Which launcher will fire it?
The M142 HIMARS.
When is the first fly-off?
Fiscal 2027, according to Breaking Defense.
- Breaking Defense – “Army taps 5 companies for PrSM Inc 4 prototypes” (September 30, 2026): breakingdefense.com
- Defense News – “US Army selects five companies for PrSM development” (September 30, 2026): defensenews.com
- Lockheed Martin company data via our company profile
