M-240 mortar

In November 1953, the 240mm M-240 mortar was seen in public for the first time, it was towed by an armoured tracked carrier and caused great expectation in the West. It was an impressive weapon that was designed at the end of World War II, but due to the rush with which it was developed, unfortunately it was fraught with problems. Due to its huge size, this mortar lost all the advantages of this kind of weapons, such as the high mobility, easy handling and high rate of fire. Perhaps, because of this, only about 300 units were built, which cannot be considered a success for an artillery piece within the Soviet Army.

M-240 mortar gallery and more info


Información adicional

Ficha Completa
Country of origin

Soviet Union


Kolomenskoye SKB


Heavy mortar

Entered service



11 servers

Combat weight

Traveling position: 4,150 kg – In firing position: 3,610 kg

Dimensions (length x width x height)

Travel position: 6.51 x 2.43 x 2.21 meters – Barrel length: 5.34 meters


1 x 240/20mm smooth-bore breech-loading mortar

Rate of fire, (maximum)

1 grenade per minute

Shell weight

HE F.864: 130.7 kg – HE 3F2 Gagara: 130 kg – 1K113 Smelchak (guided): 134.2 kg

Shell range

HE 3WF2 (3F2 Gagara) (rocket-assisted): 18 km
HE 53.F.864. 3O8 Nerpa (cluster) – Sayda (incendiary) – 1K113 Smelchak (guided): 9 km

Muzzle velocity

From 158 to 362 m/s

Warhead, (explosive charge)

Type: 3B11 (nuclear) 2 kT
Types: HE 53.F.864: 32 kg – 3WF2 (3F2 Gagara) (rocket-assisted): 34 kg – 3O8 Nerpa (cluster): 14 submunitions – 1K113 Smelchak (guided): 21 kg