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Sigma KEE - XM218
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XM218
The GAU-15/A utilized on the H-46, UH-1N and H-53 series aircraft is a crew served, recoil operated, belt fed, air cooled, percussion fired weapon, with a rate of fire of 750 rounds per minute. The gun system consists of the GAU-15/A (XM-218) cal. 50 machine gun, a pintle mount assembly, brass collection bag, and ammunition can bracket assembly. The pintle mount assembly is attached at personnel or cargo doors or windows of the aircraft. The ammunition can bracket holds a single 100 round can of linked cal. 50 percussion primed ammunition. Additional cans of ammunition are carried inside the aircraft to allow for rapid reloading. (from http://www.fas.org/man/dod-101/sys/ac/equip/gau-15.htm)
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Parents HeavyMachineGun A heavy machine gun refers to either a larger-caliber, high-power machine gun or one of the smaller, medium-caliber (rifle caliber) machine guns meant for prolonged firing from heavy mounts, less mobile, or static positions (or some combination of the two). The latter meaning is generally thought of as an older meaning, and the former as a modern one, but both weapon types have histories extending back to the 1800s. Furthermore, heavier smaller-caliber weapons continue to be used up to the present. A classic example of a rifle-caliber heavy machine gun would be a water-cooled Maxim machine gun that was belt fed, had a water jacket, was crew served, and mounted on tripod or wheeled mount. Other types used linkable strips (such as the Hotchkiss) or large magazines. A common example of a heavy-caliber machine gun would be the Browning M2 .50-caliber machine gun. Firearms with calibers larger than 13 to 15 mm are generally thought of as autocannons instead of heavy machine guns. (from Wikipedia)


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