XM214 Microgun

XM214 Microgun. The XM214 Microgun is a lightweight, electrically driven Gatling gun chambered for the 5.56×45mm NATO cartridge. Developed in the 1960s by the General Electric company as part of its broader family of rotary cannons, it was intended to provide infantry with a portable, high-volume suppressive fire weapon. Although it demonstrated impressive technical capabilities, the system saw limited adoption and was not fielded in large numbers by the United States Armed Forces.

Overview

The XM214 was conceived as a scaled-down version of the highly successful M61 Vulcan rotary cannon used on aircraft like the F-104 Starfighter and F-4 Phantom II. Its primary design goal was to translate the reliability and high rate of fire of the Gatling gun principle into a man-portable system for ground troops. The weapon formed the core of the broader XM214 Microgun System, which included a compact power unit and a sophisticated ammunition handling system. This integrated approach aimed to deliver unprecedented levels of sustained automatic fire from a platform that could be operated by a small infantry team.

Design and development

Development of the XM214 was led by the Armament Division of General Electric, building directly on their work with the M134 Minigun chambered in 7.62×51mm NATO. Engineers sought to create an even lighter weapon by utilizing the smaller 5.56×45mm NATO round, which was becoming the standard for United States Army rifles like the M16 rifle. The weapon's operation relied on an external electric motor, typically powered by a backpack-mounted battery unit, to rotate its six barrels. This electric drive, coupled with the multi-barrel design, allowed for a variable rate of fire and significantly reduced the risk of cook-off compared to single-barrel machine guns. The development program involved extensive testing at facilities like the Aberdeen Proving Ground.

Specifications

The XM214 Microgun itself weighed approximately 12.25 kg (27 lbs), but the complete system weight, including the power supply and 500 rounds of linked ammunition, was closer to 38.5 kg (85 lbs). It fired standard 5.56×45mm NATO ammunition from a disintegrating M27 link belt. Its rate of fire was electrically adjustable from 400 to 4,000 rounds per minute. The system's muzzle velocity was roughly 990 meters per second. It could be configured with various mounting systems for use on ground vehicles, helicopters, or small watercraft, and was typically aimed using optical sights like the AN/PVS-2 starlight scope.

Operational history

The XM214 underwent rigorous military evaluation by the United States Army and the United States Marine Corps during the late 1960s and early 1970s. While it performed reliably in tests and its firepower was never in doubt, the complete system was ultimately deemed too heavy and logistically complex for widespread infantry use. The need for heavy batteries and the bulk of its ammunition were significant tactical drawbacks. Consequently, it was not adopted as a standard issue weapon. Its most notable operational use was in very limited numbers during the later stages of the Vietnam War, primarily in experimental roles or mounted on riverine craft patrolling the Mekong Delta.

Variants

The core XM214 design led to several proposed and experimental variants. The most direct development was the **GAU-2/A**, a designation used for an aircraft-mounted version intended for helicopter armament. Another notable variant was the **XM218**, a vehicle-mounted model designed for installation on jeeps or other light tactical vehicles. While the Microgun itself did not enter major production, the technology and experience gained directly influenced later developments in lightweight rotary cannons and contributed to projects like the Phalanx CIWS for the United States Navy.

Category:Gatling guns Category:Machine guns of the United States Category:Experimental weapons of the United States