Since target ranges generally charge a fee for the use of their facilities, and shooters usually have to buy their own paper targets, going to a target range can incur significant costs, especially when added up over time. In addition, gun ranges by necessity have many strict rules about the use of their facilities, concerning shot rate, types of ammunition and firearms permitted, where the shooter is allowed to stand, and when they can go downrange to check their targets, which some shooters may find stifling. Many shooters also find the open air to be a much more pleasant shooting environment than the inside of a target range, which is usually made of concrete and steel.