Type 31 75mm Field Gun
- Introduced Year : 1898
- Caliber : 75 mm
- Barrel Length : 2.200m iL29.3)
- EL Angle of Fire : -5 to +28 Degrees
- AZ Angle of Fire :
- Shell Weight : 6 Kg
- Muzzle Velocity : 488 m/sec
- Weight : 0.908 ton
- Range : 7,750 m
- Production Qty : 620
Type 31 75mm Mountain Gun
- Introduced Year : 1898
- Caliber : 75 mm
- Barrel Length : 1.058 m (L13.3)
- EL Angle of Fire : -10 to +30 Degrees
- AZ Angle of Fire :
- Shell Weight : 6 Kg
- Muzzle Velocity : 261 m/sec
- Weight : 0.330 ton
- Range : 4,600 m
- Production Qty :
Type 31 Field/Mountain Guns were designed by Colonel Arisaka, a famous designer of Type 38 Rifle. Type 31 had a steel barrel and it was improved on the range and accuracy compared with the previous bronze guns. They were used during the Russo-Japanese War.