This is the most innovative optical mounting design I've ever used. The Level Drive system makes installation a breeze while ensuring your scope is perfectly square with the receiver and ring interface. I have several LEAP Micro mounts that I use with T1 and T2s so I wanted to try their full size scope mount with a ATACR 1-8x24mm on a LaRue PredatOBR in 7.62. I could not be happier with the lightweight, rigid, and compact quick-detach design. 100% satisfied.