Type 10 120 mm AA Gun

Type 10 120 mm dual-purpose gun
A damaged dual purpose 120 mm gun from a four gun battery on Guam.
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
Specifications
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)

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.