The Ares Incorporated XM274 (originally designated as the medium caliber, antiarmor automatic cannon, MC-AAAC) was an American smoothbore 75mm autocannon designed by Eugene Stoner. It used a rotating breech block with cased telescopic ammunition.
The Ares Incorporated XM274 (originally designated as the medium caliber, antiarmor automatic cannon, MC-AAAC) was an American smoothbore 75mm autocannon designed by Eugene Stoner. It used a rotating breech block with cased telescopic ammunition.
Source: Wikipedia "XM274" · CC BY-SA 4.0
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