The M40's 3-9x scope currently has two issues:

1. Shots fired using a scoped M40 will have their shots land to the right of the aim point. Zeroing distance is fine, there is just a consistent right deviation
2. When zooming in with the 3-9x scope, the zoom in isn't uniform. It magnifies in slightly to the right and slightly downward. This becomes apparent when zooming in and out on a target.

It should be noted that even with this zoom-in discrepancy, the shot will still land to the right of the crosshair.