| Year | April 1942 |
| Weapon Type | Heavy Mortar |
| Origin & Designer | Germany/Rheinmetall |
| Numbers Produced | 8.461 |
| Crew | 6 |
| Calibre | 120mm |
| Elevation | +45° to +85° |
| Traverse | 16° |
| Cartridge Weight | [@cartridge_weight] |
| Round Weight | HE: 15.8 kg Smoke: 15.8 kg |
| Barrel Length | 1.865mm |
| Overall Length | [@length] |
| Grenade Types | [@grenade_types] |
| Mount | [@mount] |
| Combat Weight | 274 kg |
| Operation | [@operation] |
| Cooling System | [@cooling] |
| Sights | [@sights] |
| Feed | [@feed] |
| Practical Rate of Fire | 5 r.p.m. |
| Maximum Rate of Fire | 12 r.p.m. |
| Blank Cartridge | [@blank_cartridge] |
| Muzzle Velocity | 283 m/s |
| Fuel Capacity | [@fuel_capacity] |
| Minimum Range | 600m |
| Effective Range | [@effective_range] |
| Maximum Range | 6.185m |
| Armour Penetration | [@armour_penetration] |
| Bayonet | [@bayonet] |
| Traction | [@traction] |
| Variants | [@variants] |
| Notes | A copy of the Soviet PM 38, the GrW 42 eas issued to Infantry Regiments to give heavy support fire. |