2S31 Vena

The 2S31 Vena ("2С31 Вена") is a Russian amphibious self-propelled 120 mm mortar system. "2S31" is its GRAU designation.

Description
The 2S31 consists of a 120mm 2A80 rifled gun-mortar mounted on the chassis of the BMP-3 infantry combat vehicle. It was developed by Joint Stock Venture "Plants of Motovilikha" (ОАО "Мотовилихинские заводы"). The 2S31's turret is equipped with digital automated fire control system, navigation system, and optical/electronic reconnaissance and target acquisition system. Its 2A80 gun-mortar is capable of launching a high-explosive mortar projectile with a maximum range of 18,000 m. The vehicle is protected by a welded aluminium hull to protect against small arms fire and shrapnel. It can also fire armour-piercing projectiles that can penetrate up to 650 mm of steel plate at ranges of up to 1 km. A separate sighting system is used when engaging in direct fire mode.

Service history
Reportedly first combat use of Vena was during Second Nagorno-Karabakh War.

In September 2023, Vena appeared in Vesti program during the report about Russian troops fighting near Bakhmut, confirming its use during Russian invasion of Ukraine.