https://www.planetminecraft.com/project/1-5-1-scale-2b9-vaselisk-automatic-mortar/


The 2B9 Vasilek (2Б9 "Василёк" - Cornflower) is an automatic 82 mm gun-mortar developed in the Soviet Union in 1967 and fielded with the Soviet Army in 1970. It was based on the F-82 automatic mortar. Unlike conventional mortars, the 2B9 can fire in single and automatic mode using four-round clips. Rounds can be loaded from either the muzzle or the breech. Because of its wheeled carriage, the 2B9 resembles a light artillery piece more than a conventional mortar.

taken from,
https://en.wikipedia.org/wiki/2B9_Vasilek