The M42 40 mm Self-Propelled Anti-Aircraft Gun, or "Duster," is an armored light air-defense gun built for the U.S. Army from 1952 until December 1959. Production of this vehicle was performed by the tank division of the General Motors Corporation. It used components from the M41 light tank and was constructed of all welded steel.
Armament consists of fully automatic twin 40 mm M2A1 Bofors, with a rate of fire of 2x120 rounds/min and either a .30 caliber Browning M1919A4 or 7.62mm M60 machine gun.
Although the M42 Duster was initially designed for an anti-aircraft role, it proved highly successful when used in the Vietnam War against unarmored ground forces.
This one is a M42A1
with its twin 40 mm M2A1 Bofors
Photo is taken in German's Panzermuseum Munster!