| Year | August 1950 |
| Weapon Type | [@type] |
| Origin & Designer | [@designer] |
| Numbers Produced | [@numbers_produced] |
| Crew | 2 (Gunner & Loader) |
| Calibre | 89mm M28A2 Rocket |
| Elevation | [@elevation] |
| Traverse | [@gun_traverse] |
| Cartridge Weight | [@cartridge_weight] |
| Round Weight | 4.023 kg |
| Barrel Length | [@barrel_length] |
| Overall Length | 1.524mm |
| Grenade Types | [@grenade_types] |
| Mount | [@mount] |
| Combat Weight | 6.5 kg |
| Operation | Recoiless |
| Cooling System | [@cooling] |
| Sights | Optical Reflector |
| Feed | Single Shot |
| Practical Rate of Fire | 2 r.p.m. |
| Maximum Rate of Fire | 6 r.p.m. |
| Blank Cartridge | [@blank_cartridge] |
| Muzzle Velocity | 102 m/s |
| Fuel Capacity | [@fuel_capacity] |
| Minimum Range | [@minimum_range] |
| Effective Range | 110m |
| Maximum Range | 823m |
| Armour Penetration | 200mm |
| Bayonet | [@bayonet] |
| Traction | [@traction] |
| Variants | [@variants] |
| Notes | The M20 could also be broken down into two parts for transport and it fired a larger 89mm round which was heavier than its predecessors, this came in handy when faced with North Korean T-34s. The M20 also saw action in the early phases of the Vietnam War, but was gradually replaced by the M67 recoilless rifle. |