Type 10 120 mm AA gun
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The Type 10 or 12 cm/45 10th Year Type naval gun was a Japanese 120 mm calibre dual purpose anti-aircraft and coastal defense gun used during the Second World War. It was derived from the 12 cm/45 3rd Year Type naval gun. Wikipedia
Length: 5.94 m (19 ft 6 in)
Caliber: 120 mm (4.7 in)
Effective firing range: Horizontal: 16,000 m (17,000 yd); Vertical: 8,500 m (27,900 ft)
Maximum firing range: Vertical: 10,000 m (33,000 ft)
Muzzle velocity: 825 m/s (2,710 ft/s)
No. built: approx 2000
Produced: 1921-1945