# Project 6639 — Multiple-Launch Rocket System Family of Munitions

**Program element:** 0603635M — Marine Corps Grnd Cmbt/Supt Sys  
**Project:** 6639  
**Component:** U.S. Navy  
**Appropriation:** 1319 — RDT&E, Navy  
**Budget Activity:** 4 — Advanced Component Development & Prototypes  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0603635M/6639  
**Parent:** https://hitchintel.com/programs/0603635M

## Summary

Project 6639 — Multiple-Launch Rocket System Family of Munitions requests $9.4M in FY2027, 1.8% of the $522.0M requested for program element 0603635M, down 68% on FY2026. 1 R-2A activity decomposes the request. Aviation & Missile Ctr is the largest named R-3 performer at $4.6M, 49% of the project's FY2027 R-3 total.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 7.9 |
| FY2026 | Enacted | 29.0 |
| FY2027 | Request | 9.4 |
| FY2028 | Outyear | 4.6 |
| FY2029 | Outyear | 11.4 |
| FY2030 | Outyear | 0.0 |
| FY2031 | Outyear | 0.0 |

> Estimate types are not summed. This project is one leaf of PE 0603635M; the PE total is the sum of its projects, never added to them.

## What project 6639 buys

This line develops a Multiple Launch Rocket System (MLRS) Family of Munitions (MFOM) Launcher Unit (MLU). The MLU will interface with Medium-range Missile (MMSL) Remotely Operated Ground Unit for Expeditionary Fires (ROGUE-Fires) carriers providing the additional capability to fire the entire complement of MFOM. This modular capability is an essential element of the Marine Corps artillery modernization strategy as it affords operational flexibility for the artillery regiments and Marine Littoral Regiments (MLR) to utilize Navy/Marine Expeditionary Ship Interdiction System (NMESIS) or MLU. The MLU will consist of a MLU sled (launch unit with a Common Fire Control System (CFCS)) and a weapon control system (Remote Gunner Station (RGS)). The RGS is a modular, scalable tablet that can be operated from a Mobile Command Vehicle as well as from a command post and is being adapted to control up to three MLUs per section. The MLU sled will be mounted upon a ground-based, tele-operated carrier (ROGUE-Fires) and will be capable of firing Guided Multiple Launch Rocket System (GMLRS), Reduced Range Practice Rocket (RRPR), Precision Strike Missile (PrSM) series, and other MFOM-related munitions that the HIMARS platform can accommodate. A ROGUE-Fires leader-follower kit will be capable of steering up to three systems. This effort includes design, development, integration, and test of the MLU and RGS for interface with the ROGUE-Fires carrier. The MLU makes extensive use of existing systems to increase operational flexibility and reduce procurement and product support. FY 2026 completed the development of one-to-one radio-controlled operations, continued development for the one-to-three radio-controlled operations of the MLU, purchased test assets, and conducted developmental testing. FY 2027 completes the development of the one-to-three radio-controlled MLU operations and conducts testing.

**R-3 lines of work:** Product Development; Support; Test and Evaluation.

## Named R-3 performers

| Performer | $M | Share of this project's FY2027 R-3 total |
|---|---|---|
| Aviation & Missile Ctr | 4.6 | 49% |
| MCSC | 0.2 | 2.1% |

> Budget-justification contract funding, not obligations. Shares need not reach 100% — unnamed and government work is in the denominator.

## Activities (R-2A) — 1

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| Multiple-Launch Rocket System Family of Munitions (MFoM) | 7.9 | 29.0 | 9.4 | −68% | — |

> Activities carry the prior, current and budget year only — no five-year plan. In the request year they partition this project exactly; in earlier years they can under-cover it.

### Multiple-Launch Rocket System Family of Munitions (MFoM)

**FY2027 planned work.** - Completes development for one-to-three radio-controlled MLU operations - Conducts developmental testing including transportability, shock/vibration, environmental, and Electromagnetic Environment Effects (E3)

**FY2026 to FY2027 change.** The decrease from FY 2026 to FY 2027 reflects the completion of test asset purchases.

**FY2026 plans — current year.** - Completed development of one-to-one radio-controlled MLU operations - Completed development of RGS - Initiated development for one-to-three radio-controlled MLU operations - Purchased ROGUE-Fires test assets for integration and developmental testing - Purchased Precision Strike Missiles (PrSM) munitions for developmental testing - Purchased Extended Range (ER) GMLRS munitions for developmental testing - Conducted developmental testing including transportability, shock/vibration, environmental, and Electromagnetic Environment Effects (E3)

## What is NOT on this page

Congressional marks, the R-2 mission description and acquisition strategy, the industry vs government split of the whole request, and related program elements are recorded at **program-element** grain — an NDAA mark lands on a PE, never on a project. They are at https://hitchintel.com/programs/0603635M.

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0603635M project 6639 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0603635M")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*