Scope Trigger.

[88WaRCraFT3]

Title all says. I need functional scope(That will be in blp of Scope,like in sharpshooter.), that i can move with arrow keys, and magnicify like zoom x2 x4 x8. Need to be MPI not MUI, and in GUI if is possible. +rep to all who give me idea or do that, and credit to greater scope system.