Turret : “A small (round) tower on top of a larger tower (or a tank) or at the corner of a building or wall, typically of a castle” That machine is more an armored vehicle with tracks, but without a turret. The machine gun itself is not a turret, and isn’t mounted on a turret.
Those are garbage cans not turrets. Based on the treads though, you can call it a tank.
It has a literal turret just above that.
Turret : “A small (round) tower on top of a larger tower (or a tank) or at the corner of a building or wall, typically of a castle” That machine is more an armored vehicle with tracks, but without a turret. The machine gun itself is not a turret, and isn’t mounted on a turret.