2S7 Pion

The 2S7 Pion (Russian: 2С7 «Пион»; English: peony) is a Soviet/Russian self-propelled 203 mm heavy artillery piece. Its GRAU designation is 2S7. It was designed to suppress enemy tactical nuclear weapons, destroy fortifications, and neutralize artillery and missile batteries. Development began in 1967 and the 2S7 entered service in the Soviet Army in 1975. It was first seen in public in 1977.

The 2S7 is powered by a V-12 diesel engine and has a maximum range of 37.5 km with standard high-explosive projectiles. It can also fire rocket-assisted projectiles to a range of up to 47.5 km, as well as specialized nuclear projectiles. The crew consists of 7 personnel. Ammunition is typically carried in a separate support vehicle.

The Pion saw service in several conflicts, including the Soviet-Afghan War and the Russo-Ukrainian War. It has been exported to several countries. An improved version, the 2S7M Malka, also exists, featuring improved mobility, fire control, and survivability.