page_title: U.S. helicopter armament subsystems
section_title: CH-3E Sea King/HH-3E Jolly Green Giant (Sikorsky S-61R)
hierarchical_section_title: U.S. helicopter armament subsystems / Transport and utility helicopters / CH-3E Sea King/HH-3E Jolly Green Giant (Sikorsky S-61R)
context_page_description: The United States military has developed a number of Helicopter Armament Subsystems since the early 1960s. These systems are used for offensive and defensive purposes and make use of a wide variety of weapon types including, but not limited to machine guns, grenade launchers, autocannon, and rockets. Various systems are still in use, though many have become obsolete.
context_section_description: The defensive armament system for the USAF's H-3E helicopters is described as standard to the HH-3E, and capable of being fitted as required to the CH-3E. The basic system comprises three M60 machine guns, one each at the forward door, the opposite emergency window, and the rear loading ramp. The forward two positions comprise pintle mounts on skate rails, while the rear loading ramp station comprises a pedestal mount on an armored floor plate. The floor plate slides on two tracks, forward and back, to and from its firing position at the edge of the ramp. Either the standard infantry M60 can be used, with standard 200-round ammunition boxes attached, or the M60D variant, feeding via flexible ammunition chutes from 750-round boxes fixed to the floor (or to the armored floor plate for the rear loading ramp position).
caption: Diagram of HH-3E w/ M60D machine guns fitted to the three stations
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