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  1. Copilot Answer
    Place of originJapan
    In service1928—1966
    Description

    The 50-caliber 12.7 cm (5.0 in) Type 3 gun was of built-up construction, originally with three and later two layers with the usual breech ring and breech bush. It used a Welin interrupted screw breech and powder bags, unus… See more

    See also

    5"/38-caliber gun: US Navy equivalent dual-purpose gun
    QF 4.5-inch Mk I – V naval gun: British equivalent dual-purpose gun
    12.7 cm SK C/34 naval gun: German equivalent limited to low-angle fire… See more

    External links

    "Japan 12.7 cm/50 (5") 3rd Year Type". 19 March 2009. Retrieved 8 July 2009. See more

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