Is this the Force of Arms model? I converted one to a IZ, but it took quite a bit of work.
Either way, neither of these cars are right for WW1. The wheels are wrong, the machine guns are also wrong.
This is what a IZ looked like:
Note the armored fenders, the right side door, and the spare wheel is not mounted on the side (it was usually carried underneath the rear of the car). The front fenders were often removed, as they got jammed with mud. Also notice the right side of the car has a kind of bulge that sticks out and has a small search light on it.
There's no rear machine gun. The machine guns were usually M1911 Maxim-Vickers, although sometimes M1906 Maxims were installed (both in 6.5mm Carcano).
Here are some photos of the WW1 era 1ZM:
The front fenders have been updated to a more conventional design, and the top turret has been removed. There are fewer vision slits than in the earlier design and the hood/bonnet also has a different shape.
The weaponry now consists of only two St. Etienne machine guns (although I remember reading an article that claimed they also carried Chauchats to fire through the vision ports).
The cars were used for a long time, and underwent many different types of upgrades and modifications. Fiat-Revelli machine guns replaced the notoriously temperamental St. Etienne's, and a third one was added to the rear. Some more changes to the hull shape seem to have taken place, but I believe they always had the right side door.
The wheels, fenders, and guns make these models more suited for the 1930s or WW2.