Part 507 - Acquisition Planning Subpart 507.1 - Acquisition Plans 507.101 Definitions. 507.103 Agency-head responsibilities. 507.104 General procedures. 507.105 Contents of acquisition plans. 507.107 Additional requirements for acquisitions involving consolidation, bundling or substantial bundling. 507.107-1 General. 507.107-5 Notifications. Subpart 507.5 - Inherently Governmental Functions 507.503 Policy. Subpart 507.70 - Additional Requirements for Purchases in Support of National Security Systems involving Weapons Systems 507.7000 Scope of subpart. 507.7001 Policy.