I am not sure if this is true on their rimfires, but their centerfires can be a real pain, with the bolt handle hitting the rear bell of most scopes. So unless someone comes along and tells us this is not true of the rimfires, get the highest darn mounts/ rings you can get, and if cz makes a some they recommend for this rig, then ask them, and get those. I used factory cz high mounts for my carbines, they are excellent , made from stock bar steel, all cut from the same bar. Super tough, and super rugged.