Yep, pretty much the industry standard.... but twice what I paid for my scope!.... I have figured out how to make my own.... It adjusts in 20 MOA steps, not continuous, but I'll have 160 MOA available (with 20MOA built into the base), which will be good for over 500 yds.... Here is the principle it works on....There is a commercial version available, but only half the travel (70 MOA)....You loosen the pivot bolts 1 turn, adjust the asymmetric octagonal cam for the rise you want, and then retighten the two bolts.... Should be rigid and repeatable....Bob