BAE Systems to provide artillery armored combat vehicles with digital vetronics in $72.5 million order

July 21, 2021
The M109A7 armored combat vehicle can keep up with the Army's fast-moving armored brigade combat team (ABCT) alongside the M1 Abrams main battle tank.

WARREN, Mich. – The U.S. Army is buying additional upgraded and fast-moving 155-millimeter self-propelled howitzer artillery vehicles with digital vetronics and modern power systems, as well as companion ammunition carrier tracked armored combat vehicles.

Officials of the Army Contracting Command in Warren, Mich., announced a $72.5 million order last week to the BAE Systems Platforms & Services segment in York, Pa., to build the M109A7 self-propelled howitzer and M992A3 ammunition carrier.

The M109A7 is the Army's newest M109 version. Formerly known as the M109A6 Paladin Integrated Management (PIM), the M109A7 uses the existing main armament and cab structure of a Paladin M109A6 self-propelled cannon, and replaces the vehicle’s chassis components with modem components common to the M2A3 Bradley Fighting Vehicle.

The goal of these upgrades is to enable the M109A7 armored combat vehicle to keep up with the Army's fast-moving armored brigade combat team (ABCT) alongside the M1 Abrams main battle tank and the M2 Bradley armored personnel carrier.

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The M109A7 program enhances the reliability, maintainability, performance, responsiveness, and lethality of the M109A6 Paladin self-propelled howitzer and M992A2 Field Artillery Ammunition Support Vehicle’s (FAASV).

The M109A7 is the primary indirect fire support system for the armored brigade combat teams. Its improved chassis provides survivability and commonality with existing ABCT armored combat vehicles. The program seeks to reduce maintenance costs by replacing obsolete components.

The M109A7 capitalizes on today's most advanced technology, including a state-of-the-art digital backbone and power generation capability, BAE Systems officials say.

Legacy M109 howitzers first are shipped to the Anniston Army Depot, Ala., where they are disassembled to provide cab structures, overhauled gun and cannon assemblies, and other vehicle components, and re-shipped to BAE Systems combat vehicle factory in York, Pa., for final assembly.

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The M109A7's on-board power systems harness technologies originally developed for the cancelled Non-Line-of-Sight Cannon. It has an electric drive that is faster than the previous hydraulic system, and has an automatic rammer for consistent velocities and accuracy.

The newest version of the M109 self-propelled cannon has a 600-volt power system to accommodate additional armor and future networking technologies. The gun can sustain a one round per-minute rate of fire and a maximum rate of fire of four rounds per-minute.

The first M109A7 low-rate production deliveries began in 2015. Ultimately Army leaders want to buy 133 of the self-propelled cannons.

On this contract modification BAE Systems will do the work in York, Pa., and should be finished by December 2023. For more information contact BAE Systems Platforms & Services online at, or the Army Contracting Command-Warren at

About the Author

John Keller | Editor-in-Chief

John Keller is the Editor-in-Chief, Military & Aerospace Electronics Magazine--provides extensive coverage and analysis of enabling electronics and optoelectronic technologies in military, space and commercial aviation applications. John has been a member of the Military & Aerospace Electronics staff since 1989 and chief editor since 1995.

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