: the2s7pion(peony") or malka is a soviet self-propelled gun. "2s7" is its grau designation.

it was identified for the first time in 1975 in the soviet army and so was calledm-1975by nato (the 2s4 tyulpan also received the m-1975 designation), whereas its official designation is so-203(2s7). Its design is based on a t-80 chassis carrying an externally mounted 2a44 203:mm gun on the hull rear.

: it carries 4 203:mm projectiles for immediate use while the remainder is carried by another vehicle and it is capable of firing nuclear ammunition of the same caliber. The gun has a range of 37,500 m but the range can be extended to 55,500 m by using raps (rocket assisted projectiles). The pion has also been the most powerful conventional artillery piece since entering service in 1983.

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