37mm  37mm Paratroop gun  45mm Bn. How.  45mm gun  ZIS2  BS3  

Modification  Mod. 1930  Mod. 1944  Mod. 1929  Mod. 1937 
Mod. 1942 

Mod. 1943 
Caliber, mm  37  37  45  45  57  100  
Battle weight/Transportation weight, kg  380/  209217  215/  560/1200  625/1250  1250/  3650 
Barrel length, calibers  45  63  26  46  68.8  73  59.6 
Shell weight, kg 
0.655^{*1}  0.73^{*1}  1.41  1.43  0.852.14  1.793.75  15.6^{*9} 
Range, m  4000^{*2}  4000^{*2}  3800  4400  4550  8400  20650 
Direct Shot Range, m  ?  ?  ?  850  870  1120  1080 
Muzzle velocity, m/sec  800^{*1}  880^{*1}  385  760  950  7001250  895 
Rate of Fire, rounds/min  1520  1525  12  1520  25  810  
Max. Elevation angle, deg  25  5  34  25  25  45  
Arc of fire, deg.  60  45  25  60  54  58  
Transport  Mech./Horses  Mech.  ?  Mech.  Mech./6horses  Mech.  
Max. transp. speed, km/h  ?  ?  ?  50  50^{*7}  50  
Loading, type  unitary  unitary  ?  unitary  unitary  ?  
Guncrew  4  4  4  4  5  6  
In Troops on June, 22'41  ?^{*3}    ?^{*4}  14937^{*5}  ^{*5}     
Armor piercing*  500/30/  500/35/  1000/40/90°  500/35/60° 1000/28/ 
500/61/60° 1000/51/ 
500/106/90° 500/106/ 1000/96/ 
900/160/90° 
Years of production  193032  194445  193132  193243^{*6}  194345  19411949  194451 
Numbers produced  506+  472  100  54315^{*6}  10843  13339^{*8}  ~1400^{*10} 
*  Range, m/armour, mm/angle, deg. When angle is not given it can be assumed to be 90°.
*1  armourpiercing shell;
*2  splinter shell;
*3  On Jan. 1'36 there were 506 such guns. Only 422 of them operable. In June 1941 were used for equipment of the 8th Mechanised Corps; No data for them in [2].
*4  Were used like common 45mm AT guns. Had no any howitser features in spite of its name. Probably were employed until 1942. No data for them in [2].
*5  There were 3 modifications of 45mm gun: Mod. 1932, 1937, 1942.
45mm gun Mod. 1932 was mounted on guncarriage of the 37mm AT gun mod. 1930;
45mm gun Mod. 1937 received guncarriage from licensed 37mm Rheinmetall gun mod. 1936;
45mm gun Mod. 1942 had improved barrel. Total numbers produced in 194245: 10843 guns.
On June 1'41 RKKA had 7682 45mm guns Mod. 1932 and 7255 guns mod. 1937. Among them 7520 in western military districts.
From [2] we can see 15468 guns in RKKA on June 22'41. Among them 7520 in western military districts.
*6  Also included guns Mod. 1932.
*7  Mechanical traction: 50 km/h (highway); 30 km/h (unpaved roads); 10 km/h (rough terrain).
*8  371 guns were produced in 1941. Then its production was paused until year 1943. ZIS2 Mod. 1943 received guncarriage from ZIS3 gun;
*9  Highexplosive shell;
*10  In 194445 years.
Foreign guns: 5812 English 42mm AT guns were received from Great Britain in 194142. they were used in AntiTank Artillery formations. In 193940 in Poland and Baltic countries there were captured several dozens of Bofors 37mm AT guns. There are no data about their usage, but it's obvious that they were utilized due to lack of AT guns in RKKA in that period. [3]