PRESS YOUR WEB BROWSER'S "BACK BUTTON" HOME
LENGTH OF LEFT-SIDE SCOPE MOUNT RAIL IS APPROX. 5.69-INCHES
WIDTH OF FORWARD RAIL IS APPROXIMATELY ..537-INCHES
WIDTH OF REARWARD RAIL IS APPROXIMATELY .539-INCHES 
This picture shows the scopes integral scope mount at the
point where the side-rail slides into when attaching the scope, thus this
pictures shows the shape of the rail: 