122 mm gun M1931/37 (A-19)

122 mm gun M1931/37 (A-19)
M1931/37 at the Museum on Sapun Mountain, Sevastopol
Type	Field gun Tank gun
Place of origin	USSR
Production history
Designer	No. 172 Plant design bureau, led by F. F. Petrov
Designed	1931–1938
Manufacturer	Barrikady Plant, No. 172 Plant
Produced	1939–1946
No. built	about 2,450
Specifications
Mass	Combat: 7,117 kg (15,690 lbs) Travel: 7,907 kg (17,431 lbs)
Length	8.725 m (28 ft 8 in)
Barrel length	Bore: 5.485 m (17 ft 11.9 in) L/45 Overall:5.65 m (18 ft 6 in) L/46.3
Width	2.345 m (7 ft 8 in)
Height	2.27 m (7 ft 5 in)
Crew	9
Shell	122 × 785 mm. R
Caliber	122 mm (4.8 in)
Breech	interrupted screw
Recoil	hydro-pneumatic
Carriage	split trail
Elevation	-2° to 65°
Traverse	58°
Rate of fire	3-4 rounds per minute
Muzzle velocity	806 m/s (2,640 ft/s)
Maximum firing range	20.4 km (12.67 mi)

122 mm corps gun M1931/37 (A-19) (Russian: 122-мм корпусная пушка обр. 1931/1937 гг. (А-19)) was a Soviet field gun developed in late 1930s by combining the barrel of the 122 mm gun M1931 (A-19) and the carriage of the 152 mm howitzer-gun M1937 (ML-20). The gun was in production from 1939 until 1946. It saw action in World War II (primarily with corps and RVGK artillery of the Red Army) and remained in service for a long time after the end of the war. Vehicle-mounted variants of the gun were fitted to the IS-2 and IS-3 tanks of the Iosif Stalin series of tanks and the ISU-122 self-propelled gun.