| Year | 1939 |
| Weapon Type | Medium Mortar |
| Origin & Designer | Finland-France/Tampella-Brandt |
| Numbers Produced | 69 |
| Crew | 5 |
| Calibre | 81.4mm |
| Elevation | [@elevation] |
| Traverse | [@gun_traverse] |
| Cartridge Weight | [@cartridge_weight] |
| Round Weight | 3.25 kg |
| Barrel Length | 1.143mm |
| Overall Length | [@length] |
| Grenade Types | [@grenade_types] |
| Mount | [@mount] |
| Combat Weight | 58.5 kg |
| Operation | [@operation] |
| Cooling System | [@cooling] |
| Sights | [@sights] |
| Feed | [@feed] |
| Practical Rate of Fire | 18 r.p.m. |
| Maximum Rate of Fire | 30 r.p.m. |
| Blank Cartridge | [@blank_cartridge] |
| Muzzle Velocity | 198 m/s |
| Fuel Capacity | [@fuel_capacity] |
| Minimum Range | 100m |
| Effective Range | [@effective_range] |
| Maximum Range | 2.700m |
| Armour Penetration | [@armour_penetration] |
| Bayonet | [@bayonet] |
| Traction | [@traction] |
| Variants | [@variants] |
| Notes | [@notes] |