安齊奧20毫米步槍是美國的反物資步槍。這是80多年來美國第一支設計並批量生產、孔徑超過.50口徑的反材料步槍。 The Anzio 20mm rifle is an American anti-materiel rifle. It is the first American anti-materiel rifle designed and mass-produced for public sale with a bore diameter in excess of.50 caliber in over 80 years.
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