This document provides guidance on the Marine Corps Systems Command's (MARCORSYSCOM) implementation of the Department of Defense acquisition system. It outlines the acquisition framework, including milestones, phases, and evolutionary acquisition. It describes MARCORSYSCOM's Probability of Program Success (PoPS) process for requirements transition and program reviews. It also covers ACAT program designation and management procedures, including the Milestone Assessment Team process. The document provides tools, templates, and guidance for documentation, reporting, joint programs, and program removal from active status.