Doesn't work with nightforce b e a s t - Leupold Mark 6 34mm Integral Mounting System, Left Handed, Matte Black

This is a very nice piece - very well made and finished - which is why I gave it a 5 star rating. However, Optics Planet recommended this mount for my NightForce B.E.A.S.T scope -- and it WILL NOT work with that scope. There is interference between the bottom of the scope and the rib between the rings. Lucky for me I own a milling machine... so I just milled the rib down enough to gain the clearance needed.

My biggest point here - Optics Planet needs to learn their products.