Type 10 120 mm AA Gun

The Type 10 was a Japanese 120 mm calibre dual-purpose anti-aircraft and coastal defense gun used during the Second World War. The Type 10 number was designated for the year the gun was accepted,the 10th year of Emperor Taishō's reign, 1927 in the Gregorian calendar.

The weapon was originally designed for ship use and was produced in large numbers during 1944. The gun was adapted for land use as a dual-purpose gun.

The gun fired either high explosive or incendiary shrapnel shells that weighed 20.6 kilograms, with a complete round weighing 32.4 kilograms.

Country Name Origin Year
Japan 1921
Country Name Operational Year Retirement Year
Japan 1921 1945 View

Type Anti-aircraft / coastal defense gun
Place of origin  Empire of Japan
Service history
In service 1921 to 1945
Used by  Empire of Japan
Wars Second World War
Production history
Produced 1921 to 1945
Number built approx 2000
Weight 8.5 tons
Barrel length 5.4 m (17 ft 9 in) L/45
Caliber 120 millimetres (4.7 in)
Breech Semi-automatic horizontal sliding wedge
Carriage Fixed pedestal
Elevation -5 to +75 degrees
Traverse 360 degrees
Rate of fire 10 to 12 rounds per minute
Muzzle velocity 825 m/s (2,710 ft/s)
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)

End notes