Leupold rail mount - Leupold Mark 2 IMS Integral AR Rail Mount

I was trying to mount my Burris Eliminator III scope onto my Ruger PSR. The scope has it's own mounts built into the scope. Initially, when I mounted the scope, I was unable to turn the focus ring on the front of the scope because it was rubbing on the rail. After much research I cam upon Leupold's Mark 2 IMS Integral AR Rail Mounts. They corrected the elevation requirements and it was a breeze installing them and zeroing the scope.