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Yuma Proving Ground Testing Cutting-Edge Turret System

MAY 8, 2024 – In a potentially significant stride forward in military technology, Yuma Proving Ground (YPG) is testing a cutting-edge Modular Turreted Mortar System (MTMS).

According to Kevin Irr, a test officer from the Munitions and Weapons Division, intensive evaluations are currently underway to ensure the MTMS system meets performance expectations for an upcoming demonstration at the Maneuver Warfighter Conference at Fort Moore in September 2024.

Installed on an Armored Multi-Purpose Vehicle (AMPV), this new mortar (NeMo) turret is a semi-automated, single-barrel 120mm breech-loaded mortar system and has long captured the interest of the Army for its potential to bolster operational capabilities.

A vehicle commander oversees its operation, while two crew members are needed to load the turret. Since Soldiers will be operating the NeMo at the demonstration, ongoing safety testing holds significant importance.

“We are diligently verifying its advertised capabilities and making sure it is safe for the Soldiers to operate,” Irr explained. “Additionally, we’re conducting several other tests to gauge the weapons system’s overall operability.”

Testing on the weapon system began in January and is projected to wrap up by July. Furthermore, a demonstration test will be carried out at YPG to pinpoint any potential issues or to fine-tune procedures before the AMPV-mounted weapon is sent to Fort Moore.

The safety testing focuses primarily on two critical areas, as outlined by Irr. Foremost, the Army is assessing the impact of vehicle operation on auditory health to protect soldier’s hearing. Mortar systems produce high-intensity noise during firing and prolonged exposure can result in hearing damage.

Additionally, prioritizing the buildup of toxic fumes within the vehicle, which may result from weapon firing and engine exhaust, is another top priority. Irr emphasized the critical need to manage these fumes effectively to safeguard the lives or crew members.

Irr also provided some insight into the project’s origin, tracking back several years, saying this integration onto the AMPV is part of a multi-phase foreign comparative test in which the Army initially evaluated the system’s capability on a foreign vehicle using U.S. ammunition.

Reflecting on that initial testing phase, he remembered how it ignited curiosity and interest among military experts, prompting further exploration of the weapon system’s potential utility within the U.S. Army’s arsenal.

To evaluate its viability, a thorough comparison test was designed, subjecting it to the rigorous conditions at YPG.

“It is a prototype,” clarified Irr, who took part in the early part of the testing. “This turreted system has undergone prior testing here on a different vehicle. During those tests, it piqued our interest and garnered some attention.”

Recognizing the system’s promise, the decision was made to evaluate it on a U.S. vehicle, specifically the AMPV.

According to Capt. Mike Hapner from the Program Executive Office Ground Combat Systems, the AMPV was chosen because it maintains an objective requirement to replace the Mortar Carrier Variant with an automated MTMS.

“The U.S. Army is interested in the MTMS’ capability to shoot on the move, perform direct fire missions, as well as its capability to conduct Multiple Rounds Simultaneous Impact (MRSI) missions,” Hapner stated.

This feature fills a notable gap in the U.S. Army’s current inventory, as there isn’t currently a mortar system with this capability.

“There are other pluses as well,” Irr said. “If it does ever get fielded, it would be the only mortar system in which U.S. Soldiers are protected inside a vehicle.”

Story by James Gilbert
U.S. Army Yuma Proving Ground

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Filed Under: Army, News

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Baltic States Pledge to Meet NATO’s 5% GDP Military Target

JULY 27, 2025 – Defense Secretary Pete Hegseth held an enhanced honor cordon and quadrilateral meeting at the Pentagon, welcoming Estonian Defense Minister Hanno Pevkur, Latvian Defense Minister Andris Sprūds and Lithuanian Defense Minister Dovilė Šakalienė. During the meeting, the Baltic states pledged to meet the target of 5% of their gross domestic product for […]

Air National Guard Unveils New Bonus Program

MARCH 11, 2023 – On March 1st, the Air National Guard (ANG) launched a new bonus program to attract and retain personnel in critical specialties. The initiative offers significant financial rewards, with bonuses of up to $90,000 for eligible members, depending on their Air Force Specialty Codes (AFSCs). This strategic move aims to strengthen the […]

Education Benefits Make Stronger Service Members

APRIL 3, 2025 – Within the armed forces, a variety of educational benefits are available that allow service members to both improve themselves and make themselves more valuable to their service branch. One example is the Military Tuition Assistance Program. The program is available to enlisted personnel, officers and warrant officers in the Army, Navy, […]

Former Soldier Navigates Job Hunt

NOVEMBER 19, 2024 — In early 2017, Michael Quinn endured what he called the worst day in the worst year of his life. Quinn, then a sergeant major and 24-year Army Soldier, had weathered deployments in Iraq, Afghanistan and the Philippines. As an Army counter-intelligence agent, he said he learned to operate under grave circumstances […]

Financial Planning for Military Families

JUNE 25, 2025 – Have you ever wondered how military families manage their finances while dealing with deployments, relocations, and changing pay structures? Financial planning is a vital part of life for families who serve. With unique benefits, challenges, and lifestyle changes, military families must make smart financial decisions that protect their future and help […]

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