If you use a single piece base you will need medium rings............... and if you use a two piece base you will need low rings. You can go with a higher ring if you need it for the best alignment with your eye.

If you go to Leupolds site and enter your gun and any of their 40mm scopes (VX-I, II, or III) this is what it tells you.


You will not need to drill and tap for larger screws with a 7mm mag.