A proper scope for the gun would be a fixed power of 2.5x or 4x or a low power variable that has a max power of 5, 6 or 7. There are a lot of them that fit into that range. Scopes like 1-4, 1.5-6 or 2-7 are all he needs. One of mine has a 1.5-4.5 on it, the other wears a Williams reciever peep sight.