Identify the primary regulation for the management of USMC property.

The primary regulation for the management of United States Marine Corps (USMC) property is MCO 4400.150. This Marine Corps Order specifically addresses the policies and procedures regarding property accountability, control, and reporting. It ensures that all personnel understand their responsibilities in managing government property effectively, which is critical for maintaining operational readiness and accountability.

MCO 4400.150 outlines the guidelines for proper property management within the Marine Corps, detailing the processes for inventory control, property transfer, and loss reporting. It serves as a comprehensive framework for Marines to follow, ensuring that they adhere to established standards and practices in handling military property.

In contrast, the other options refer to regulations that govern different branches of the military. AR 735-5 is focused on the Army's property accountability policies, AFMAN 23-110 pertains to the Air Force's property management procedures, and NAVSUP P-485 serves the Navy's logistics and supply support functions. Each of these regulations is tailored to the specific needs and operational frameworks of their respective services, making them less applicable to Marine Corps property management than MCO 4400.150.