Get a weaver rail ( i take it this is for the MFR ?) mount from Paulsok on BBS . I`ll get a pic of mine up in a bit . Then you can mount your scope forward and the add on will be closer to where you need it . If you need the exta you could always put a butt pad extension on it . Also , you want a sidewheel scope for NV add ons .
Edited to say the mini swat scopes are good for this , size wise , and side wheel aswell .