Palestra Group International has developed a one-day “Ghost Gun” and 3D Printing Investigations Course designed to assist prosecutors and officers with target development and long-term investigations into the manufacture and trafficking of Personally Made Firearms. The course highlights the use of open source intelligence, on line retailer information, the utilization of undercover operators, and case development beyond the trafficker. The course also details the significant differences between Commercially Manufactured Firearms and Personally Made Firearms (Ghost Guns) and the implementation of current State and Federal guidelines. This course is presented by active prosecutors, case officers and undercover operators conducting in-depth long-term investigations.