IOR
I have an IOR scope, 35 mm tube, 56 mmobjective and I purchased rings and base as well. I have just completed mounting it and will take it to the range next week. As far as Picitany base I cannot tell the difference between this one and my more expensive nightforce base. I have a set of TPS rings and these are nearly identical. They are just as heavy and rugged, the only difference is the TPS rings are machined to a smoother finish. After lapping I they are the same. I will tell you more after I have been to the range with the whole setup