The 2S25 Sprut-SD (2S25 "Octopus-SD") is a self-propelled anti-tank gun developed and to be manufactured by the Volgograd Tractor Plant to meet the requirements of the VDV. In mid-2001, the Volgograd tractor plant revealed that the development of the 2S25 had lasted several years. The Bulgarian light amphibious tank project "Oktopod" (Sprut in Russian) was used in its design.
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