The 2S7 Pion ("peony") or 2S7M Malka is a Soviet self-propelled 203 mm cannon.

It used a new-design chassis, partly based on T-72 and T-80 design,[1] carrying an externally mounted 2A44 203 mm gun on the hull rear.

[3] The Malka modernization process in the late 2010s involved substituting several of the Ukrainian-produced components, such as the gearbox and engine, with new components manufactured in Russia at the Uraltransmash plant in Yekaterinburg.

Because the blast of the weapon firing is so powerful, it can physically incapacitate an unprepared soldier or crew member near it from the concussive force, the Pion is therefore equipped with an audible firing alarm that emits a series of short warning tones for approximately five seconds prior to the round being fired.

An updated version called the 2S7M Malka entered service in either 1983 or 1986.