| Year | 1931 |
| Weapon Type | Light Anti-Tank Gun |
| Origin & Designer | Germany-Russia/Rheinmetall-Plant No.8 |
| Numbers Produced | 509 |
| Crew | 5 |
| Calibre | 37mm (37x249R) |
| Elevation | -8° to +25° |
| Traverse | 60° |
| Breech | Horizontal Block |
| Recoil | Hydrospring |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Split Trail |
| Trailers | [@trailers] |
| Gun Shield | 4.5mm |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 1.665mm (L/45) |
| Overall Length | 3.04m |
| Width | 1.65m |
| Height | 1.17m |
| Weight | 380 kg (In Action) |
| Round Weight | AP: 0.73 kg HE: 0.95 kg |
| Muzzle Velocity | AP: 880 m/s HE: 825 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 10-15 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | 4000m |
| Armour Penetration | 30mm @ 500m @ 30° |
| Traction | Horse Drawn & Motorized |
| Variants | [@variants] |
| Notes | The 37mm 1-K was a Russian version of the German Pak 35/36 Anti-Tank Gun. It became the first dedicated anti-tank gun used by Soviet forces prior to world war two and was used as a base to design the next series of 45mm anti-tank guns. |