3 parts. Reproduced (except Part III which is carbon copy of typescript). (Regraded UNCLASSIFIED from original CONFIDENTIAL) Part I: 130 pp., text. 28 captioned reproduced photographs. Reference Works. Glossary. Part II: 223 pp., text. 70 captioned reproduced photographs. Reference Works. Glossary. Part III: 184 pp. text. 13 captioned reproduced photographs. Reference Works. Glossary. Content: Consists of a narrative discussion of the official and unofficial evolution of the concept of arming helicopters and the actual weapons systems and subsystems. Part I Chapters: Considering the Aggressive Role; Project ABLE BUSTER; The Early Armair Brigade Experiment; Seeking Adequate Weapons; A Formal Program Gets Under Way; and Project Managership of Helicopter Armament. Part II Chapters: The U.S. Seventh Army Armament Kit; The Townsend System; The XM-1, XM-1E1, and XM-2 Subsystems; Helicopter Armament Subsystem, M-6 (XM-6); Procurement and Production of Machine-Gun Subsystems for Helicopters; and Antitank Guided Missiles. Part III Chapters: The Springfield Armory Effort; The Ford Motor Company Effort; and The General Electric Company Effort. Contains information about: .50-caliber machine gun; 8cm Oerlikon Aerial Rocket; .30-caliber machine gun; 2.75-inch rocket; Intervalometer; fixed-fin aerial rocket (FFAR); folding-fin aerial rocket; Fort Rucker, Alabama; White Sands Proving Grounds, New Mexico; Springfield Armory, Massachusetts; Rock Island Arsenal, Illinois; Okinawa; B-29; HU-1; UH-1 Iroquois ("Huey"); H-13 Sioux; OH-13; H-21 Shawnee; OH-23; H-25; H-34 Choctaw; Alouette II; Utility Transport Tactical Helicopter Company; Vietnam War; Packmeyer Pods; P-61 Sight; 1.5-inch NAKA Rocket; RIA Armament Kit; 4.5-inch armament kit; XM-153 Armament Subsystem; SS-10; SS-11; F-4U Corsair; M-37 .30-caliber machine gun; 40mm grenade launcher (XM-5); XM-75 grenade launcher; USARYIS; Harry W. O. Kinnaird; 1LT R. R. Chedester; MG Normando A. Costello; CPT Anthony Carroll; and CPT C. W. Jones. .