# Project MS1 — Battalion Mortar System Modernization

**Program element:** 0604802A — Weapons and Munitions - Eng Dev  
**Project:** MS1  
**Component:** U.S. Army  
**Appropriation:** 2040 — RDT&E, Army  
**Budget Activity:** 5 — System Development & Demonstration  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604802A/MS1  
**Parent:** https://hitchintel.com/programs/0604802A

## Summary

Project MS1 — Battalion Mortar System Modernization requests $26.1M in FY2027, 21% of the $124.9M requested for program element 0604802A, down 7.7% on FY2026. 1 R-2A activity decomposes the request. Defense Ordnance is the largest named R-3 performer at $19.3M, 74% of the project's FY2027 R-3 total.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 5.8 |
| FY2026 | Enacted | 28.3 |
| FY2027 | Request | 26.1 |
| FY2028 | Outyear | 15.9 |
| FY2029 | Outyear | 12.4 |
| FY2030 | Outyear | 5.8 |
| FY2031 | Outyear | 5.8 |

> Estimate types are not summed. This project is one leaf of PE 0604802A; the PE total is the sum of its projects, never added to them.

## What project MS1 buys

The Battalion Mortar System Modernization project supports the development of modernized Mortar Weapon Systems to support Mobile Brigade Combat Teams (MBCTs), Infantry Brigade Combat Teams (IBCTs), Stryker Brigade Combat Teams (SBCTs), and Armored Brigade Combat Teams (ABCTs). Efforts include development and qualification of modernized mortar systems and their required components to include fire control and ammunition that will increase range, lethality, survivability, mobility and readiness. The weapon and fire control will be used as a standalone man-portable system with digital fire control capability or as a modular system that can be hosted onto light tactical vehicles such as the High Mobility Multipurpose Wheeled Vehicle (HMMWV), the Infantry Squad Vehicle (ISV) and/or Joint Lightweight Tactical Vehicle (JLTV) when a mobility kit is utilized. This modernized system will increase survivability, maneuverability, and provide tactical advantage to the Warfighter when matched with pacing threat for direct and indirect fire and will provide overmatching capabilities. Initial characterization efforts will establish a firm foundation for proposed advanced indirect fire systems while allowing for incremental improvements and updates as technologies continue to mature, which will maintain and enhance performance, improve lethality, responsiveness, and reliability of indirect fire systems across the required spectrum of military operations. Fiscal Year (FY) 2027 funding will support the design and development of a next generation mobile mortar weapons, fire control systems, and mobility kits that can be hosted on tactical vehicles.

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

## Named R-3 performers

| Performer | $M | Share of this project's FY2027 R-3 total |
|---|---|---|
| Defense Ordnance | 19.3 | 74% |
| ATEC | 0.7 | 2.7% |
| Office of the Project Manager (OPM) Comb | 0.4 | 1.5% |

> 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 |
|---|---|---|---|---|---|
| Mortar Weapon, Fire Control and Mobility System Modernization | 5.8 | 28.3 | 26.1 | −8% | [a0](https://hitchintel.com/programs/0604802A/MS1/a0) |

> 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.

### Mortar Weapon, Fire Control and Mobility System Modernization

FY 2027 funding in the amount of $26.121 million will continue to support activities to further design and develop a next generation 81mm mortar weapon, fire control system, and mobility kit that can be hosted on a tactical vehicle. Additionally, funding is required to support the next generation 120mm mortar weapon, fire control system…

Full year-by-year narrative: https://hitchintel.com/programs/0604802A/MS1/a0

## 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/0604802A.

## Source & machine access

- **Source:** FY2027 Department of the Army RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0604802A project MS1 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604802A")`.

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