The U.S. Army is conducting a market survey to identify vendors capable of providing 155mm propelling charges, percussion primers, and engineering services for the 155mm 52-caliber howitzer Mobile Tactical Cannon. The evaluation will use a 23-liter chamber, with testing likely at the U.S. Army Yuma Proving Ground. Vendors must submit responses within 15 days of the notice, detailing their propulsion solution, technology readiness, modeling predictions, engineering experience, hardware availability, and lead-time estimates. The Army plans to perform a Propelling Charge & Primer Evaluation in FY27 to inform senior leadership on extending the cannon's range. No budget information is specified in the description.