The Polonez[1] is a Belarusian 300 mm rocket artillery system of a launcher unit comprising eight rockets packaged in two four-rocket pods mounted on a MZKT-7930 vehicle.

[3][4] The system was designed by the Belarusian Plant of Precision Electromechanics in cooperation with a foreign country, probably China.

The first combat missile launches were carried out in China.

[6] An upgraded version called Polonez-M passed all trials and has been accepted into service by the Belarusian Ground Forces as of May 2019.

Polonez-M has an increased range of 290 km (186.4 mi), a higher share of domestic components and can fire the improved A-300 missile.