It's a rebox of the DML BMP-2, one of their first kits and over 20 years old; my BMP instructions are dated 1989. The released three kits that are essentially the same, BMP-1 (3503), BMP-2 (3504) and BMP-2E (3588). The Esci BMP-1 and -2 were better, but only because they didn't use over-sized hinges to allow the hatches to open. The third company to give us a BMP around the same time was Lindberg's BMP-1U; a kit they never finished tooling, but released regardless.
Anyway, if you search for DML builds or aftermarket stuff, they will fit the Zvezda kit.