| Year | 1939 |
| Weapon Type | Light Anti-Aircraft Gun |
| Origin & Designer | Russia/Loginov |
| Numbers Produced | 20.000 |
| Crew | 8 |
| Calibre | 37mm (37x250R) |
| Elevation | -5° to +85° |
| Traverse | 360° |
| Breech | Automatic |
| Recoil | Spring |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Twin Wheeled Carriages and Stabilizing Legs and Ja |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 2.730mm (L/61) |
| Overall Length | 5.50m |
| Width | 1.79m |
| Height | 2.11m |
| Weight | Weight in Traction: 2.100 kg Weight in Action: 2.100 kg |
| Round Weight | 0.785 kg |
| Muzzle Velocity | 880 m/s |
| Feed | Five Round Clips |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 160 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | 6.500m |
| Maximum Ground Range | 8.500m |
| Maximum Range | [@maximum_range] |
| Armour Penetration | 37mm @ 500m @ 30° |
| Traction | Motorised |
| Variants | [@variants] |
| Notes | The 37mm 61-K was the main light anti-aircraft gun used by the Soviets in world war two. Like the 72-K, it was also based on the Bofors and mounted on a ZU-7 carriage. They first reached the troops in 1939 and were issued to light anti-aircraft batteries at divisional level. |