I got a new stith scope mount off Ebay. The one i was using took only 1 inch straight scopes so you were limited to 3 power .. This new one con take a much larger objective lens . you can use early model weaver scopes like the weaver K6 6 power ... I chose to use a weaver kv scope made in the 50s .Its the first variable power scope made 2.5 to 5 power .. The power knob is located next to the L R knob .. well have a look thanks ...