Don't know if this topic's been discussed.new to the forum looking for direction.bought 3 scopes from an ior distributor (usa optics).who claimed he imported IOR scopes.bought (2) 4x28x56 40 mm tube 2400.00 each and (1)6x24x56 (1400.00) i asked for the exposed elevation knob on the 6x24x56 35mm...