An excellent reenactment of a warrior of the Golden Horde. Reenactor uknown, possibly from a Russian or a Kazakh reenactment group. Kudos to them.
The Golden Horde was one of the most important successor states of the Mongol Empire after its dissolution. The core area population was mostly of Turco-Mongol stock desceded mainly from the earlier Kipchak/ Cuman/Polovtsy tribal federation.

The warrior of the image wears a Turco-Mongol type of helmet with visor (being mostly a legacy of the Kipchak ancestors), and full-body lamellar armour. He is armed with a typical nomadic sabre.
Below, a map of the Golden Horde (wikimedia commons)