| General Electric/Martin Marietta 'Avenger' 30 mm, 7-barreled gatling gun with a variable firing rate of 2,100 or 4,200
rpm (or up to 3,900 rpm). The length of 19 ft. 10 in (6.06 m) long makes it the largest gun of this type in existance. Used
on the A-10 aircaft and Goalkeeper CIWS.
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