U.S. Army Backs General Atomics Maneuvering 155mm Projectile for Future Long Range Fires.

General Atomics Electromagnetic Systems has secured a U.S. Army contract to demonstrate a maneuvering long-range 155 mm projectile under the Extended Range Artillery Projectile (ERAP) program, a development announced on June 12, 2026, that could significantly expand the reach and survivability of U.S. artillery in contested battlespaces. By combining extended range, precision guidance, and resilience against GPS disruption while remaining compatible with existing howitzers, the effort targets a critical requirement for maintaining artillery overmatch in future high-intensity warfare.

The ERAP projectile is designed to maneuver in flight and strike targets at far greater distances than conventional artillery rounds while retaining accuracy in electronic warfare environments. If successful, it could provide brigade and division commanders with a cost-effective precision fires capability that bridges the gap between traditional artillery shells and long-range missile systems, reinforcing the Army’s broader push toward more survivable and flexible battlefield firepower.

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General Atomics has won a U.S. Army contract to demonstrate a maneuvering 155 mm Extended Range Artillery Projectile (ERAP) designed to deliver long-range precision strikes from existing howitzers, even in GPS-denied combat environments (Picture Source: General Atomics)

On June 12, 2026, General Atomics Electromagnetic Systems announced that it had received a U.S. Army contract to demonstrate a long-range maneuvering 155 mm projectile under the Extended Range Artillery Projectile program. The award comes as the U.S. Army seeks to restore artillery overmatch after years of renewed focus on large-scale combat operations, contested airspace, electronic warfare, and counter-battery threats. By combining extended range, precision guidance, and compatibility with existing artillery platforms, the program addresses one of the most urgent gaps in modern land warfare. The development is significant because it could allow U.S. self-propelled howitzers to strike deeper, survive longer, and remain effective even when GPS signals are degraded or denied.

The Extended Range Artillery Projectile, or ERAP, is intended to validate a new generation of maneuvering 155 mm ammunition able to reach significantly greater distances than current cannon artillery rounds while maintaining precision against targets in complex operational environments. Under the contract, General Atomics Electromagnetic Systems will conduct flight demonstrations to prove the projectile’s ability to maneuver after launch, remain accurate in GPS-contested conditions, and support the Army’s objective of achieving an Initial Operational Capability by fiscal year 2030. The award also places the company in position as a potential production source for advanced munitions designed to extend the operational reach of U.S. Army self-propelled howitzers without requiring an immediate replacement of the entire artillery fleet.

The projectile described by General Atomics differs from conventional ballistic artillery ammunition because it is engineered to generate lift and adjust its trajectory during flight. According to the company, the design uses deployable wings and advanced redundant guidance systems, while remaining compatible with legacy cannons and loaders. This point is operationally important: instead of relying only on new artillery vehicles or longer barrels, the Army can pursue a munition-centered approach that extracts more capability from existing 155 mm systems. The projectile is also designed to deliver extended range without rocket assist, a feature that could simplify integration, reduce dependence on propulsion components inside the projectile body, and preserve design space for guidance, control, and payload functions.

This contract also reflects a broader shift in U.S. artillery modernization. After past efforts to increase range through new cannon systems faced technical and acquisition challenges, the Army has increasingly focused on the projectile itself as a path to regain range, accuracy, and tactical relevance. Long-range cannon ammunition must survive extreme gun-launch conditions, including very high acceleration, heat, pressure, spin, and vibration, before its guidance and control systems can function in flight. For a maneuvering 155 mm projectile, this means that electronics, wings, control surfaces, structural components, and guidance packages must operate reliably after being fired from a gun tube, not from a missile launcher. The ERAP effort therefore represents both a munition program and a materials, manufacturing, and survivability challenge.

The strategic implications extend beyond technical performance. In a potential conflict against a peer or near-peer adversary, U.S. ground forces would face dense air defenses, electronic warfare, long-range fires, drones, counter-battery radars, and mobile armored formations. Airpower may not always be immediately available to strike targets deep behind the front line, particularly in anti-access and area-denial environments. A precision 155 mm projectile able to fly farther and maneuver toward its target would give brigade and division commanders an additional tool to engage artillery batteries, air defense systems, armored vehicles, command nodes, logistics positions, and moving targets at greater standoff distances. This could reduce exposure for U.S. artillery units while complicating an adversary’s ability to mass forces, relocate launchers, or operate from areas previously considered beyond the reach of cannon fire.

For the U.S. Army, the importance of ERAP lies in the balance between range, cost, mass, and survivability. Missiles such as PrSM, HIMARS-launched rockets, and other long-range strike systems provide powerful effects, but they are more expensive and generally available in smaller quantities than artillery ammunition. Cannon artillery remains essential because it can deliver repeated fires at scale, sustain pressure on enemy formations, and support maneuver forces across extended operations. If ERAP can provide missile-like precision at artillery scale, it could help fill the space between traditional 155 mm shells and higher-end missile systems, giving commanders more flexible options for targets that require precision but not necessarily the cost or range of a tactical missile.

The industrial dimension is also central to the award. General Atomics has stated that it invested early in the technologies needed for the projectile and has been expanding advanced manufacturing infrastructure in Mississippi, including its Manufacturing Center of Excellence in Tupelo. The company describes this facility as designed to support surge capacity through automation, modular production processes, and new materials. This matters because the war in Ukraine has shown that artillery effectiveness depends not only on individual weapon performance but also on industrial endurance, ammunition availability, and the ability to replenish stocks during prolonged conflict. A future ERAP production line would therefore support both operational capability and the U.S. defense industrial base, particularly if the Army seeks to field the munition in meaningful quantities before the end of the decade.

The General Atomics ERAP award marks a decisive step in the U.S. Army’s effort to reshape cannon artillery for future high-intensity warfare. By pursuing a maneuvering 155 mm projectile that can fly farther, remain accurate in GPS-degraded environments, and operate from existing artillery systems, the Army is seeking a practical route to restore long-range fires overmatch without waiting for an entirely new generation of guns. If the flight demonstrations validate the technology and the industrial base can scale production, ERAP could become one of the key munitions linking traditional field artillery with the precision-strike demands of modern multi-domain operations, giving U.S. forces a deeper, more survivable, and more flexible fires capability by 2030.

Written by Teoman S. Nicanci – Defense Analyst, Army Recognition Group

Teoman S. Nicanci holds degrees in Political Science, Comparative and International Politics, and International Relations and Diplomacy from leading Belgian universities, with research focused on Russian strategic behavior, defense technology, and modern warfare. He is a defense analyst at Army Recognition, specializing in the global defense industry, military armament, and emerging defense technologies.