I can't get photobucket to work or I would load a picture. I have a set of rings that are 30mm and appear to mount to a rail. The only difference is ONE of the set has a notch out of the stationary side of where it would attach to the rail. There is no bar to fit in the groove of the rail. The screw to tighten the rings on the rail is a recessed star bit screw (leupold fits).

I thought these were regular rings when I bought them but when I went to mount them last night I could not get them to work on a picatinny rail.

Any help is appreciated. I do not have the box obviously l. I purchased them last year from a gun shop in the clearance bin.