For you guys that have a ZPAP 92 with the pic rail on the rear of the receiver can you tell me if the rail runs perfectly up and down or is there a slight cant to it?  Looking at photos (cant get my hands on one of the guns in person) it looks like the rail is canted slightly but that could also be due to the angle cut of the receiver.

don't have mine yet but I did just handle one at the gun show and the 1913 rail is tapered like a wedge to match with the slanted rear receiver.  When the rail is installed, the rail is straight up and down and NOT at an angle.