If you wish to have a riflemen clad in the sniper suit of the color you are on follow these steps.

Select the ak-74 and accept it. Go back to the soldier selection. Scroll down to the sniper class. If you see a M24 and M9 pistol then you have done it right so far.

Accept it and ready up.

If you check anything other than Server info you will be reset with the m24.

You must repeat after every proceed.

Change the ak-74 with any gun and the sniper class with demo expert for your gun and a demo expert uniform.