BETA ZEN
1.1-inch/75-caliber gun
Texto da Wikipédia (en), licença CC BY-SA. O BETARUBI mostra o verbete inteiro nesta página — a leitura não continua fora do site.
The 1.1"/75 caliber gun was an American anti-aircraft weapon of World War II, used by the United States Navy. The name means that it had a bore diameter of 1.1 in (28 mm) and barrel caliber of 75. The gun was designed to replace the M2 Browning and four barrels were required to duplicate the rate of fire.