The MG 151/20 was an automatic aircraft cannon that was used by Germany during World War II.


The MG 151 is the larger counterpart to the MG 151/15. It fires 20 x 82 mm rounds, and measures about 1.76 meters in length, including a total barrel length of 1.1 meters, and weighs a total of 42.7 kilograms. The MG 151 uses a short recoil clearing system, and can fire up to 750 rounds per minute. Common ammunition types included the 20 mm M-Geschoss round, which could fired at a velocity of 805 meters per second, and the 20 mm HE-T and the AP rounds, which could be fired at a rate of 705 meters per second.[1]

The MG 151/20 was used on a variety of aircraft, including the Messerschmitt Bf 109 and Focke Wulf Fw 190.


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