Iranian HM20 Hadid 122 mm Multiple Launch Rocket System (MLRS)  mounted on a Mercedes-Benz NG 2626 platform used in Syria.

Video appearing on «Russia Today» TV channel claiming to depict Iranian-built  Hadid HM-20 122 mm MLRS in use with Syrian forces near Aleppo.

The HM-20  is the Iranian version of the BM-21, mounted on a Mercedes-Benz 2624 6×6 truck. The launch pack however consists of 2 packs of 20 tubes.

Reportedly there is also a version with an automatic reload-system, latest version is mounted on 6×6 MAN and older  version   is mounted on Mercedes-Benz NG 2626 trucks.