The M46 Patton medium tank was an upgrade of America's M26 Pershing heavy tank. It had a new engine, a new transmission and a new M3A1 3.54 inch (90mm) main gun with a muzzle brake and bore evacuator.
Secondary armament on the M46 consisted of two 0.3 inch (7.62mm) machine guns - one coaxial and one in
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M46 Patton Medium Tank
![M46 Patton Medium Tank](https://www.armytanks.org/wp-content/uploads/2011/03/m46-patton-medium-tank-korea-1952-180x180.jpg)