Depending upon your base, it could work. Here's a couple of pictures of my FA83 with a Weigand
http://www.midwayusa.com/viewproduct/?productnumber=272947 base, and Leupold 4X Pistol Scope.
Notice the gap between the bottom of the base and the top of the barrel in front of the frame/barrel junction.
That gap allows the base to slide right over the top of the holster. The front of the frame butts up against the end of the cutout on the top of the holster. With the pictured Weigand, it's not an ideal fit as the scope base presses down on the top of the holster a little. This doesn't look like it would be a problem with the Lovell or Leupold sold by FA.
So, it looks like FA's Lovell and the Leupold bases would work, but the TSOB would not.
If you can call Freedom Arms , they will be able to give you more information.
Paul
