M167 Vulcan
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The M167 VADS Vulcan Air Defense System, which has been withdrawn from service, was a towed short-range United States Army air defense gun intended to protect forward area combat elements and rear area critical assets. It also protected against lightly armored ground targets.
The M167A2 VADS was a modified M167A1 VADS with an improved fire control subsystem. The improvement was obtained by replacing the disturbed reticle sight with a director reticle sight, the sight current generator with a digital processor, and the azimuth drive assembly with a harmonic drive. It also had an os bite implemented within the system's electronics.
