Elbit America, the U.S. subsidiary of Israel’s Elbit Systems, is showcasing its SIGMA 155mm mobile artillery system concept at the Association of the United States Army (AUSA) exposition, aiming to position the platform as a future solution for U.S. Army long-range precision fires.
The SIGMA system, currently entering service with the Israel Defense Forces under the name “Roem,” is a wheeled 10×10 self-propelled howitzer equipped with a fully automated 52-caliber cannon and a 40-round turret magazine. Designed for rapid deployment and high-volume fire, the platform delivers eight or more rounds per minute with full 360-degree traverse — while keeping its three-person crew inside the protected cab at all times.
According to Elbit America, the version under evaluation has been adapted for potential U.S. Army requirements and would be manufactured domestically if selected for procurement.
“The system emplaces rapidly and is in position ready to fire in less than a minute,” the company said. “The three-Soldier crew never has to leave the safety of the armored cab and can meet any mission requirement with 8+ rounds-per-minute and true 360-degree firing.”
The SIGMA platform on display at AUSA represents a new approach to artillery modernization, combining fully automated ammunition handling with wheeled mobility to support rapid shoot-and-scoot tactics. The company says the design reduces logistical burden while increasing survivability and responsiveness in distributed battlefield conditions.
In Israel, the Roem system saw its first operational test in June and is slated to begin fielding with a dedicated IDF artillery unit in the coming year. Brigadier General Yair Natans, Chief of Artillery for the Israel Defense Forces, has praised the platform for its tactical flexibility and ability to support maneuver units more effectively.
“We have taken another significant step toward the addition of the Roem to the diverse fire capabilities that corps commanders use to assist the maneuvering forces,” Brig. Gen. Natans said in June. “It will change how artillery is used.”
Elbit Systems says the SIGMA platform allows for better coordination with infantry and armored forces by delivering fast, accurate fire support without the need for dismounted crews or lengthy setup. The ability to remain buttoned-up in the cab is intended to minimize exposure in high-threat environments, particularly under drone or counter-battery surveillance.
The system competes in a growing category of wheeled 155mm solutions seeking attention from the U.S. Army as it continues its long-range fires modernization drive. South Korea’s K9 platform — including a new K9MH variant — has also been pitched to U.S. officials at AUSA.