The PM office has divided its responsibilities for life cycle management (research, development, product improvement, production, fielding, testing, environmental assessment/remediation and organic manufacturing facility expansion and modernization) into the following product management areas:

Product Manager Small Caliber (PdM SCA)

PdM SC is responsible for life cycle management, to include research, development, product improvement, production, fielding, testing and sustainment for direct fire small caliber ammunition (.22 cal, .30 cal, shotgun, 9mm, .45 cal, 5.56mm, 7.62mm, .50 cal), and specialty items, e.g. for the dismounted Warfighters, Army aviation, and ground combat systems, Navy ship and aviation platforms, Air Force and SOCOM aviation platforms...
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Product Manager Medium Caliber (PdM MC)

PdM MC is responsible for life cycle management to include research, development, production, fielding, testing, industrial base and environmental impacts for direct fire medium and cannon caliber ammunition (20mm, 25mm, 30mm and 40mm) for Army aviation and ground combat systems, Navy ship and aviation platforms, Marine Corps vehicle and aviation platforms, Air Force aviation platforms and SOCOM aviation platforms... 
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Product Manager Large Caliber (PdM LC)

PdM LC is responsible for life cycle management, including research, development, production, and fielding, testing, and environmental impacts for large caliber direct fire ammunition (50mm, 105mm and 120mm) for the Army and Marines. Platforms supported include the Abrams Tank, Stryker Mobile Gun System, and the emerging Ground Combat Vehicle program...
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Product Director Special Ammo & Weapons Systems (PD SAWS)

In August, 2009 Army AT&L charged PEO Ammunition with assuming the responsibility of non-standard ammunition acquisition management, who then formalized the Non-Standard Ammunition Product Director Office under the PM MAS organization...
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